Cita APA (7th ed.)

Maramba, F. D., & Obias, E. D. (1978). Biogas and waste recycling: The Philippine experience. Maya Farms Division, Liberty Flour Mills.

Cita Chicago (17th ed.)

Maramba, Felix D., i Enrico D. Obias. Biogas and Waste Recycling: The Philippine Experience. Metro Manila, Philippines: Maya Farms Division, Liberty Flour Mills, 1978.

Cita MLA (9th ed.)

Maramba, Felix D., i Enrico D. Obias. Biogas and Waste Recycling: The Philippine Experience. Maya Farms Division, Liberty Flour Mills, 1978.