Gaya APA

E., M, L, S, ;, , G, N. (1974). Behavioral Research Theory, Procedure,and Design (2). America: Library of Congress Cataloging.

Gaya MLA

E., Meyers, Lawrence, S., ;, , Grossen, Neal. "Behavioral Research Theory, Procedure,and Design". 2 America: Library of Congress Cataloging, 1974. Text.