Cita APA (7th ed.)

Van Rija, P. P. (1975). Thinking and conceptual behavior. Learning System Co.

Cita Chicago (17th ed.)

Van Rija, Paul P. Thinking and Conceptual Behavior. Homewood: Learning System Co, 1975.

Cita MLA (9th ed.)

Van Rija, Paul P. Thinking and Conceptual Behavior. Learning System Co, 1975.