APA

Lawesson J. E., Adsersen H. & Bentley P. (1987). An updated and annotated check list of the vascular plants of the Galapagos Islands. [Aarhus]: Botanical Institute, University of Aarhus.

Chicago

Lawesson J E, Adsersen H and Bentley P. 1987. An updated and annotated check list of the vascular plants of the Galapagos Islands. [Aarhus]: Botanical Institute, University of Aarhus.

Harvard

Lawesson J. E., Adsersen H. and Bentley P. (1987). An updated and annotated check list of the vascular plants of the Galapagos Islands. [Aarhus]: Botanical Institute, University of Aarhus.

MLA

Lawesson J E, Adsersen H and Bentley P. An updated and annotated check list of the vascular plants of the Galapagos Islands. [Aarhus]: Botanical Institute, University of Aarhus. 1987.