APA (7th ed.) Citation

Orcullo, N. A., Jr. (1997). Irrigation systems handbook. Busy Book Distributors.

Chicago Style (17th ed.) Citation

Orcullo, N. A., Jr. Irrigation Systems Handbook. Pasig City: Busy Book Distributors, 1997.

MLA (9th ed.) Citation

Orcullo, N. A., Jr. Irrigation Systems Handbook. Busy Book Distributors, 1997.