Unknown creator; St. Louis University; Parks College of Saint Louis University. (1943). Two Parks College students learn how to install an engine.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Unknown creator; St. Louis University; Parks College of Saint Louis University. Two Parks College Students Learn How to Install an Engine. 1943.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Unknown creator; St. Louis University; Parks College of Saint Louis University. Two Parks College Students Learn How to Install an Engine. 1943.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.