APA Citation

Perkins, H. A., & Perkins, H. A. (1955). Física general. México: UTEHA.

Chicago Style Citation

Perkins, Henry A., and Henry A. Perkins. Física General. México: UTEHA, 1955.

MLA Citation

Perkins, Henry A., and Henry A. Perkins. Física General. México: UTEHA, 1955.

Warning: These citations may not always be 100% accurate.