APA

Zechmeister J. S. a. Z. B. a. S. J. J., .Essentials of Research Methods in Psychology. New Delhi:Tata McGraw Hill Education , 2009: .

Chicago

Zechmeister Jeanne S and Zechmeister,Eugene B and ShaughnessyK John J, .Essentials of Research Methods in Psychology. New Delhi:Tata McGraw Hill Education , 2009: .

Harvard

Zechmeister J. S. a. Z. B. a. S. J. J., .Essentials of Research Methods in Psychology. New Delhi:Tata McGraw Hill Education , 2009: .

MLA

Zechmeister Jeanne S and Zechmeister,Eugene B and ShaughnessyK John J, .New Delhi:Tata McGraw Hill Education , 2009: . .