APA

Henkel T. W., Kelloff C. L., Alexander S. N., Funk V. A. & Smithsonian Institution. (2016). Smithsonian plant collections, Guyana: 1992-2014, Terry W. Henkel. Washington, D.C: Smithsonian Institution Scholarly Press.

Chicago

Henkel Terry W, Kelloff Carol Lynn, Alexander Sara N, Funk V A and Smithsonian Institution. 2016. Smithsonian plant collections, Guyana: 1992-2014, Terry W. Henkel. Washington, D.C: Smithsonian Institution Scholarly Press.

Harvard

Henkel T. W., Kelloff C. L., Alexander S. N., Funk V. A. and Smithsonian Institution. (2016). Smithsonian plant collections, Guyana: 1992-2014, Terry W. Henkel. Washington, D.C: Smithsonian Institution Scholarly Press.

MLA

Henkel Terry W, Kelloff Carol Lynn, Alexander Sara N, Funk V A and Smithsonian Institution. Smithsonian plant collections, Guyana: 1992-2014, Terry W. Henkel. Washington, D.C: Smithsonian Institution Scholarly Press. 2016.