Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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