APA

Berry P. e., Yatskievych K. & Holst B. K. (2005). Flora of the Venezuelan Guayana vol. 9 Rutaceae - Zygophyllaceae. St. Luois: Missouri Botanical Garden Press.

Chicago

Berry Paul e, Yatskievych Kay and Holst Bruce K. 2005. Flora of the Venezuelan Guayana vol. 9 Rutaceae - Zygophyllaceae. St. Luois: Missouri Botanical Garden Press.

Harvard

Berry P. e., Yatskievych K. and Holst B. K. (2005). Flora of the Venezuelan Guayana vol. 9 Rutaceae - Zygophyllaceae. St. Luois: Missouri Botanical Garden Press.

MLA

Berry Paul e, Yatskievych Kay and Holst Bruce K. Flora of the Venezuelan Guayana vol. 9 Rutaceae - Zygophyllaceae. St. Luois: Missouri Botanical Garden Press. 2005.