If you have answered "yes" to these five questions you have probably located a scientific article.
Research articles are also often known as scientific or peer reviewed articles. If the article is NOT written by the person or group who did the research, it is NOT a peer-reviewed or scientific article. Research articles are important for knowing what new discoveries have been made. This is why it is important to use recent articles, since they will be the first things published on a new scientific development.
Here's a quick overview of how to identify these journal articles:
When the author's name appears in the sentence, it does not need to be repeated in the citation.
(Smith and Jones, 1982; Jones, 1988a,b; Jones et al., 1992, 1993).
Smith and Jones (1992) or Smith and Jones (1990, 1992).
More than two authors
(Jones et al., 1992)
Journal names shall be abbreviated according to the conventional ISO abbreviations used by PubMed.
Last name, Initials, Initials Last name, Initials Last name. Year. Article title, sentence style capitalization. Abbreviated journal title volume(issue, if available):pages. DOI for article published after 2005.
Perez, V. G., A. M. Waguespark, T. D. Bidner, L. L. Southern, T. M. Fakler, T. L. Ward, M. Steidinger, and J. E. Pettigrew. 2011. Additivity of effects from dietary copper and zinc on growth performance and fecal microbiotia of pigs after weaning. J. Anim. Sci. 89:414–425. doi:10.2527/ jas.2010-2839
Books and articles within edited books
Author. Year. Title, sentence level capitalization. Edition, if available. Publisher's name, publisher's location.
AOAC. 1990. Official methods of analysis. 15th ed. Assoc. Off. Anal. Chem., Arlington, VA.
Chapter in edited book
Last name, Initials, Initials Last name, and Initials Last name. Year. Chapter title, sentence style capitalization. In: editor. Book title, sentence style capitalization. Publisher's name, Publisher's location. pages.
Robinson, P. H., E. K. Okine, and J. J. Kennelly. 1992. Measurement of protein digestion in ruminants. In: S. Nissen, editor, Modern methods in protein nutrition and metabolism. Academic Press, San Diego, CA. p. 121–127.
Last name, Initials. Year. Title, sentence style capitalization. Thesis type. Academic institution, Location.
Ward, J.D. 1995. Effects of copper deficiency on performance and immune function of cattle. PhD Diss. North Caroline State Univ., Raleigh.