APA (7th ed.) Citation

Cohen, N. M. (1955). Vocational training directory of the United States: A compilation of about 3,800 private and 600 public non-degree schools, offering over 300 semi-professional , technical, and trade courses (2d ed., rev. and enl.). [publisher not identified].

Chicago Style (17th ed.) Citation

Cohen, Nathan M. Vocational Training Directory of the United States: A Compilation of About 3,800 Private and 600 Public Non-degree Schools, Offering over 300 Semi-professional , Technical, and Trade Courses. 2d ed., rev. and enl. Washington: [publisher not identified], 1955.

MLA (9th ed.) Citation

Cohen, Nathan M. Vocational Training Directory of the United States: A Compilation of About 3,800 Private and 600 Public Non-degree Schools, Offering over 300 Semi-professional , Technical, and Trade Courses. 2d ed., rev. and enl. [publisher not identified], 1955.