APA

Higman D., Whigham D., Parker G. & Oftedal O. (2016). An Ecologically Annotated Checklist of the Vascular Flora at the Chesapeake Bay Center for Field Biology, with Keys. Washington: Smithsonian Institution Scholarly Press; Smithsonian Environmental Research Center.

Chicago

Higman Daniel, Whigham Dennis, Parker Geoffrey and Oftedal Olav. 2016. An Ecologically Annotated Checklist of the Vascular Flora at the Chesapeake Bay Center for Field Biology, with Keys. Washington: Smithsonian Institution Scholarly Press; Smithsonian Environmental Research Center.

Harvard

Higman D., Whigham D., Parker G. and Oftedal O. (2016). An Ecologically Annotated Checklist of the Vascular Flora at the Chesapeake Bay Center for Field Biology, with Keys. Washington: Smithsonian Institution Scholarly Press; Smithsonian Environmental Research Center.

MLA

Higman Daniel, Whigham Dennis, Parker Geoffrey and Oftedal Olav. An Ecologically Annotated Checklist of the Vascular Flora at the Chesapeake Bay Center for Field Biology, with Keys. Washington: Smithsonian Institution Scholarly Press; Smithsonian Environmental Research Center. 2016.