APA

Hamerslag F. E., . (1950). The technology and chemistry of alkaloids. New York: D. Van Nostrand.

Chicago

Hamerslag Frank E, . 1950. The technology and chemistry of alkaloids. New York: D. Van Nostrand.

Harvard

Hamerslag F. E., . (1950). The technology and chemistry of alkaloids. New York: D. Van Nostrand.

MLA

Hamerslag Frank E, . The technology and chemistry of alkaloids. New York: D. Van Nostrand. 1950.