Cita APA (7th ed.)

Pancho, J. V., & Obien, S. (1995). Manual of ricefield weeds in the Philippines. Philippine Rice Research Institute.

Cita Chicago (17th ed.)

Pancho, Juan V., i S.R Obien. Manual of Ricefield Weeds in the Philippines. Munoz, Nueva Ecija: Philippine Rice Research Institute, 1995.

Cita MLA (9th ed.)

Pancho, Juan V., i S.R Obien. Manual of Ricefield Weeds in the Philippines. Philippine Rice Research Institute, 1995.