Cita APA (7th ed.)

(1986). The physical environment and agro-socio economics and land evaluation. Bureau of Soils and Water Management.

Cita Chicago (17th ed.)

The Physical Environment and Agro-socio Economics and Land Evaluation. Quezon City: Bureau of Soils and Water Management, 1986.

Cita MLA (9th ed.)

The Physical Environment and Agro-socio Economics and Land Evaluation. Bureau of Soils and Water Management, 1986.