APA aipamena

Beek, H. V. (1975). Concept and statement. Scott, Foresman.

Chicago Style aipamena

Beek, Howard Vander. Concept and Statement. Glenview, IL: Scott, Foresman, 1975.

MLA aipamena

Beek, Howard Vander. Concept and Statement. Scott, Foresman, 1975.