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.
Cytowanie według stylu Chicago (wyd. 17)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.
Cytowanie według stylu MLA (wyd. 9)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.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..