American Psychological Association
Perry, John A, & Perrk, Erna K ( 1980 ). Contemporary Society an Introduction to Social Science ( 00 ed. ). Harper & Row Publishers.
Modern Language Association
Perry, John A and Perrk, Erna K. Contemporary Society an Introduction to Social Science . Harper & Row Publishers. 1980
Chicago Citation
Perry, John A and Perrk, Erna K. Contemporary Society an Introduction to Social Science . 00 .New York
: Harper & Row Publishers, 1980.
American Medical Association
Perry, John A and Perrk, Erna K. Contemporary Society an Introduction to Social Science . Harper & Row Publishers; 1980.
