APA
Bernstein D. A., . (1991). Psychology A2 /The complete companion. Boston: Houghton Mifflin.
Chicago
Bernstein Douglas A, . 1991. Psychology A2 /The complete companion. Boston: Houghton Mifflin.
Harvard
Bernstein D. A., . (1991). Psychology A2 /The complete companion. Boston: Houghton Mifflin.
MLA
Bernstein Douglas A, . Psychology A2 /The complete companion. Boston: Houghton Mifflin. 1991.