Cortes, L. S. (1977). The effect of gibberellic acid on sex expression and some agronomic characters of squash (Cucurbita maxima Duch) and cucumbers (Cucumis sativus L.) [microform]. Photoduplication Service. University of the Philippines Library.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Cortes, Lino S. The Effect of Gibberellic Acid on Sex Expression and Some Agronomic Characters of Squash (Cucurbita Maxima Duch) and Cucumbers (Cucumis Sativus L.) [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Cortes, Lino S. The Effect of Gibberellic Acid on Sex Expression and Some Agronomic Characters of Squash (Cucurbita Maxima Duch) and Cucumbers (Cucumis Sativus L.) [microform]. Photoduplication Service. University of the Philippines Library, 1977.