Dyfyniad APA
Wittig, A. F. (1981). Schaum's outline of theory and problems of psychology ... McGraw-Hill.
Dyfyniad Arddull Chicago
Wittig, Arno F. Schaum's Outline of Theory and Problems of Psychology ... New york: McGraw-Hill, 1981.
Dyfyniad MLA
Wittig, Arno F. Schaum's Outline of Theory and Problems of Psychology ... McGraw-Hill, 1981.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.