APA

Berry D. M., Martin G. P., . (1971). A guide to writing research papers. New York: McGraw-Hill.

Chicago

Berry Dorothea M, Martin Gordon P, . 1971. A guide to writing research papers. New York: McGraw-Hill.

Harvard

Berry D. M., Martin G. P., . (1971). A guide to writing research papers. New York: McGraw-Hill.

MLA

Berry Dorothea M, Martin Gordon P, . A guide to writing research papers. New York: McGraw-Hill. 1971.