APA

Smithsonian Institution, . (2011). Smithsonian plant collections, Guyana: 1995-2004, H. David Clarke. Washington, D.C: Smithsonian Institution Scholarly Press.

Chicago

Smithsonian Institution, . 2011. Smithsonian plant collections, Guyana: 1995-2004, H. David Clarke. Washington, D.C: Smithsonian Institution Scholarly Press.

Harvard

Smithsonian Institution, . (2011). Smithsonian plant collections, Guyana: 1995-2004, H. David Clarke. Washington, D.C: Smithsonian Institution Scholarly Press.

MLA

Smithsonian Institution, . Smithsonian plant collections, Guyana: 1995-2004, H. David Clarke. Washington, D.C: Smithsonian Institution Scholarly Press. 2011.