Cita APA (7th ed.)

Valderrama, H. A. S., & Bautista, C. C. (2009). Efficiency analysis of electric cooperatives in the Philippines. College of Business Administration, University of the Philippines.

Cita Chicago (17th ed.)

Valderrama, Helena Agnes S., i Carlos C. Bautista. Efficiency Analysis of Electric Cooperatives in the Philippines. Quezon City: College of Business Administration, University of the Philippines, 2009.

Cita MLA (9th ed.)

Valderrama, Helena Agnes S., i Carlos C. Bautista. Efficiency Analysis of Electric Cooperatives in the Philippines. College of Business Administration, University of the Philippines, 2009.