Lathrop, R. G. (1969). Introduction to psychological research: Logic, design, analysis. Harper & Row.
Lua i Stíl Chicago (17ú heag.)Lathrop, Richard G. Introduction to Psychological Research: Logic, Design, Analysis. New York: Harper & Row, 1969.
Lua MLA (9ú heag.)Lathrop, Richard G. Introduction to Psychological Research: Logic, Design, Analysis. Harper & Row, 1969.
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