Walraven, M. G., & Fitzgerald, H. E. (1988). Psychology 88/89 (Annual ed.). The Dushkin Publishing Group.
Lua i Stíl Chicago (17ú heag.)Walraven, Michael G., agus Hiram E. Fitzgerald. Psychology 88/89. Annual ed. Connecticut: The Dushkin Publishing Group, 1988.
Lua MLA (9ú heag.)Walraven, Michael G., agus Hiram E. Fitzgerald. Psychology 88/89. Annual ed. The Dushkin Publishing Group, 1988.
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