Cita APA (7a ed.)

(1979). Textbook Classification Scheme. A Report From the Educational Materials Review Center (EDMARC).

Cita Chicago Style (17a ed.)

Textbook Classification Scheme. A Report From the Educational Materials Review Center (EDMARC). 1979.

Cita MLA (9a ed.)

Textbook Classification Scheme. A Report From the Educational Materials Review Center (EDMARC). 1979.