APA (7th ed.) Citation

Allison, J. F., Freund, R. J., Klipple, E. C., McGee, R. V., & Moore, B. C. (1969). Effects of an experimental study aid on achievement in plane trigonometry of Texas A&M University students.

Chicago Style (17th ed.) Citation

Allison, Joe Frank, R. J. Freund, E. C. Klipple, R. V. McGee, and Bill C. Moore. Effects of an Experimental Study Aid on Achievement in Plane Trigonometry of Texas A&M University Students. [College Station, Tex.], 1969.

MLA (9th ed.) Citation

Allison, Joe Frank, et al. Effects of an Experimental Study Aid on Achievement in Plane Trigonometry of Texas A&M University Students. 1969.