APA

Williams D. H., . (1989). Spectroscopic methods in organic chemistry. London: McGraw Hill Book company.

Chicago

Williams Dufley H, . 1989. Spectroscopic methods in organic chemistry. London: McGraw Hill Book company.

Harvard

Williams D. H., . (1989). Spectroscopic methods in organic chemistry. London: McGraw Hill Book company.

MLA

Williams Dufley H, . Spectroscopic methods in organic chemistry. London: McGraw Hill Book company. 1989.