APA-referens (7:e uppl.)

Hoppe, H. a. T. L. (1982). Marine algae in pharmaceutical science. de Gruyter.

Chicago-referens (17:e uppl.)

Hoppe, H.A. and T. Levring. Marine Algae in Pharmaceutical Science. Berlin, West Germany: de Gruyter, 1982.

MLA-referens (9:e uppl.)

Hoppe, H.A. and T. Levring. Marine Algae in Pharmaceutical Science. de Gruyter, 1982.