توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Bell & Howell Co. Educational Division. (1931). Medical films and their sources: A compilation indicating 16 mm. films available on medical, surgical, health and hygiene subjects. Bell & Howell company, Educational division.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Bell & Howell Co. Educational Division. Medical Films and Their Sources: A Compilation Indicating 16 Mm. Films Available on Medical, Surgical, Health and Hygiene Subjects. Chicago: Bell & Howell company, Educational division, 1931.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Bell & Howell Co. Educational Division. Medical Films and Their Sources: A Compilation Indicating 16 Mm. Films Available on Medical, Surgical, Health and Hygiene Subjects. Bell & Howell company, Educational division, 1931.