APA

Yelles M., . (1971). Readers' guide to the McGraw-Hill encyclopedia of science and technology. New York [etc.]: McGraw-Hill Book Company.

Chicago

Yelles Marvin, . 1971. Readers' guide to the McGraw-Hill encyclopedia of science and technology. New York [etc.]: McGraw-Hill Book Company.

Harvard

Yelles M., . (1971). Readers' guide to the McGraw-Hill encyclopedia of science and technology. New York [etc.]: McGraw-Hill Book Company.

MLA

Yelles Marvin, . Readers' guide to the McGraw-Hill encyclopedia of science and technology. New York [etc.]: McGraw-Hill Book Company. 1971.