APA

Pratzner F. C., Walker J. P. & American Vocational Association. (1972). Programmatic research and development in education: positions, problems, propositions. Columbus: Center for Vocational and Technical Education, Ohio State University; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington.

Chicago

Pratzner Frank C, Walker Jerry P and American Vocational Association. 1972. Programmatic research and development in education: positions, problems, propositions. Columbus: Center for Vocational and Technical Education, Ohio State University; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington.

Harvard

Pratzner F. C., Walker J. P. and American Vocational Association. (1972). Programmatic research and development in education: positions, problems, propositions. Columbus: Center for Vocational and Technical Education, Ohio State University; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington.

MLA

Pratzner Frank C, Walker Jerry P and American Vocational Association. Programmatic research and development in education: positions, problems, propositions. Columbus: Center for Vocational and Technical Education, Ohio State University; [for sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington. 1972.