APA (7th ed.) Citation

Sommer, R., & Estabrook, M. (1990). Textbook Prices and Their Implications for Social Sciences Librarians.

Chicago Style (17th ed.) Citation

Sommer, Robert, and Marina Estabrook. Textbook Prices and Their Implications for Social Sciences Librarians. 1990.

MLA (9th ed.) Citation

Sommer, Robert, and Marina Estabrook. Textbook Prices and Their Implications for Social Sciences Librarians. 1990.

Warning: These citations may not always be 100% accurate.