APA (7th ed.) Citation

Penrose Productions, Addison-Wesley Pub. Co, Penrose, J., Johnson, G. P., & Leyden, M. B. (1988). The Elements. Penrose Productions.

Chicago Style (17th ed.) Citation

Penrose Productions, Addison-Wesley Pub. Co, Jim Penrose, Gordon P. Johnson, and Michael B. Leyden. The Elements. [United States]: Penrose Productions, 1988.

MLA (8th ed.) Citation

Penrose Productions, et al. The Elements. Penrose Productions, 1988.