APA (7th ed.) Citation

Cohen, N. M. (1958). Vocational training directory of the United States: A compilation of over 7,000 private and public schools, offering almost 700 semi-professional , technical, and trade courses, and including tuition charges, approval status, and other information (3d ed., rev. and enl.). Potomac Press.

Chicago Style (17th ed.) Citation

Cohen, Nathan M. Vocational Training Directory of the United States: A Compilation of over 7,000 Private and Public Schools, Offering Almost 700 Semi-professional , Technical, and Trade Courses, and Including Tuition Charges, Approval Status, and Other Information. 3d ed., rev. and enl. Arlington, Va.: Potomac Press, 1958.

MLA (9th ed.) Citation

Cohen, Nathan M. Vocational Training Directory of the United States: A Compilation of over 7,000 Private and Public Schools, Offering Almost 700 Semi-professional , Technical, and Trade Courses, and Including Tuition Charges, Approval Status, and Other Information. 3d ed., rev. and enl. Potomac Press, 1958.