APA (7th ed.) Citation

Shaffer, D. E. (1974). Free posters, charts, and maps: Sources for over 500 bulletin board items. [D. E. Shaffer?].

Chicago Style (17th ed.) Citation

Shaffer, Dale E. Free Posters, Charts, and Maps: Sources for over 500 Bulletin Board Items. [Salem? Ohio]: [D. E. Shaffer?], 1974.

MLA (9th ed.) Citation

Shaffer, Dale E. Free Posters, Charts, and Maps: Sources for over 500 Bulletin Board Items. [D. E. Shaffer?], 1974.