APA

English J. e. a., . (1971). Principles of organic chemistry. : McGraw-Hill Kogakusha Ltd., New Delhi.

Chicago

English James et al, . 1971. Principles of organic chemistry. : McGraw-Hill Kogakusha Ltd., New Delhi.

Harvard

English J. e. a., . (1971). Principles of organic chemistry. : McGraw-Hill Kogakusha Ltd., New Delhi.

MLA

English James et al, . Principles of organic chemistry. : McGraw-Hill Kogakusha Ltd., New Delhi. 1971.