Cita APA (7a ed.)

Valcarcel, L. J. (2007). Ecological footprint. College of Business Administration, University of the Philippines.

Cita Chicago Style (17a ed.)

Valcarcel, Lina J. Ecological Footprint. Quezon City: College of Business Administration, University of the Philippines, 2007.

Cita MLA (9a ed.)

Valcarcel, Lina J. Ecological Footprint. College of Business Administration, University of the Philippines, 2007.