Citazione Stile APA (7a Edizione)

Briones, R. d. l. C. (1977). Growth and yield performance of sweet potato varieties differing in morphological characteristics [microform]. Photoduplication Service. University of the Philippines Library.

Citazione stile Chigago Style (17a edizione)

Briones, Ricardo de la Cruz. Growth and Yield Performance of Sweet Potato Varieties Differing in Morphological Characteristics [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.

Citatione MLA (9a ed.)

Briones, Ricardo de la Cruz. Growth and Yield Performance of Sweet Potato Varieties Differing in Morphological Characteristics [microform]. Photoduplication Service. University of the Philippines Library, 1977.