APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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