APA (7. basım) Alıntı

Houle, C. O. (1973). The external degree ([1st ed.].). Josey-Bass Publishers.

Chicago Style (17. basım) Atıf

Houle, Cyril Orvin. The External Degree. [1st ed.]. San Franscisco: Josey-Bass Publishers, 1973.

MLA (8th ed.) Atıf

Houle, Cyril Orvin. The External Degree. [1st ed.]. Josey-Bass Publishers, 1973.