APA (7e ed.) Bronvermelding

Duldulao, M. D. (2005). The art collector's guidebook (Rev. ed.). University of Pangasinan.

Chicago (17e ed.) Bronvermelding

Duldulao, Manuel D. The Art Collector's Guidebook. Rev. ed. Dagupan City: University of Pangasinan, 2005.

MLA (9e ed.) Bronvermelding

Duldulao, Manuel D. The Art Collector's Guidebook. Rev. ed. University of Pangasinan, 2005.