Combatir, V. C. (1983). Videotape instruction versus instruction by conventional method in teaching a topic in biology to first year college students.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Combatir, Veronica C. Videotape Instruction Versus Instruction by Conventional Method in Teaching a Topic in Biology to First Year College Students. 1983.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Combatir, Veronica C. Videotape Instruction Versus Instruction by Conventional Method in Teaching a Topic in Biology to First Year College Students. 1983.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.