Cita APA (7a ed.)

(1989). Directory of graduate programs: 1990 & 1991 ([12th ed.].). Educational Testing Service.

Cita Chicago Style (17a ed.)

Directory of Graduate Programs: 1990 & 1991. [12th ed.]. Princeton: Educational Testing Service, 1989.

Cita MLA (9a ed.)

Directory of Graduate Programs: 1990 & 1991. [12th ed.]. Educational Testing Service, 1989.