APA (7th ed.) Citation

Heuberger, G. M., Boone, J. L., Denton, J. J., & Gutcher, G. D. (1987). The effect of selected symbol systems used as presentation forms for concepts related to orthographic projection.

Chicago Style (17th ed.) Citation

Heuberger, Gregory Michael, James L. Boone, Jon J. Denton, and G. Dale Gutcher. The Effect of Selected Symbol Systems Used as Presentation Forms for Concepts Related to Orthographic Projection. 1987.

MLA (9th ed.) Citation

Heuberger, Gregory Michael, et al. The Effect of Selected Symbol Systems Used as Presentation Forms for Concepts Related to Orthographic Projection. 1987.