APA (7e ed.) Bronvermelding

Obal, M. R., & Dorado, D. A. D. (2015). An economic valuation of Marikina City library using revealed preference methods.

Chicago (17e ed.) Bronvermelding

Obal, Manilyn R., en Dan Anthony D. Dorado. An Economic Valuation of Marikina City Library Using Revealed Preference Methods. Quezon City : School of Library and Information Studies, University of the Philippines Diliman, 2015.

MLA (9e ed.) Bronvermelding

Obal, Manilyn R., en Dan Anthony D. Dorado. An Economic Valuation of Marikina City Library Using Revealed Preference Methods. 2015.