APA

Gray J. A., . (1971). The psychology of fear and stress. New York: McGraw-Hill.

Chicago

Gray Jeffrey Alan, . 1971. The psychology of fear and stress. New York: McGraw-Hill.

Harvard

Gray J. A., . (1971). The psychology of fear and stress. New York: McGraw-Hill.

MLA

Gray Jeffrey Alan, . The psychology of fear and stress. New York: McGraw-Hill. 1971.