APA (7th ed.) Citation

Sarenas, A. M., & De Guzman, F. G. (1968). Laboratory manual in general zoology. The Authors.

Chicago Style (17th ed.) Citation

Sarenas, Artemio M., and Francisco G. De Guzman. Laboratory Manual in General Zoology. Manila: The Authors, 1968.

MLA (9th ed.) Citation

Sarenas, Artemio M., and Francisco G. De Guzman. Laboratory Manual in General Zoology. The Authors, 1968.