Citazione Stile APA (7a Edizione)

Villegas, A. D. (1963). A national library. University of the Philippines.

Citazione stile Chigago Style (17a edizione)

Villegas, Aurora D. A National Library. Quezon City: University of the Philippines, 1963.

Citatione MLA (9a ed.)

Villegas, Aurora D. A National Library. University of the Philippines, 1963.