APA (7th ed.) Citation
Perkins, H. A., & Mateo Sousa, E. d. Fisica General.
Chicago Style (17th ed.) Citation
Perkins, Henry A., and Eligio de Mateo Sousa. Fisica General.
MLA (9th ed.) Citation
Perkins, Henry A., and Eligio de Mateo Sousa. Fisica General.
Warning: These citations may not always be 100% accurate.