Cita APA

Council of Graduate Schools in the United States & Graduate Record Examination Board. (1973). Directory of graduate programs (13th ed.). Educational Testing Service.

Citación estilo Chicago

Council of Graduate Schools in the United States and Graduate Record Examination Board. Directory of Graduate Programs. 13th ed. Princeton, N.J: Educational Testing Service, 1973.

Cita MLA

Council of Graduate Schools in the United States and Graduate Record Examination Board. Directory of Graduate Programs. 13th ed. Educational Testing Service, 1973.