APA (7th ed.) Citation

Petersen, J. B. (1923). The Fresh Water Cyanophyceae of Iceland: By Johs. Boye Petersen (With 17 figures in the text.). (J. Frimodt), (Wheldon & Wesley).

Chicago Style (17th ed.) Citation

Petersen, Johannes Boye. The Fresh Water Cyanophyceae of Iceland: By Johs. Boye Petersen (With 17 Figures in the Text.). (Copenhagen), (London): (J. Frimodt), (Wheldon & Wesley), 1923.

MLA (9th ed.) Citation

Petersen, Johannes Boye. The Fresh Water Cyanophyceae of Iceland: By Johs. Boye Petersen (With 17 Figures in the Text.). (J. Frimodt), (Wheldon & Wesley), 1923.