APA

Barbour M. G., Pitts W. D., Burk J. H., Gilliam F. S. & Schwartz M. W. (1999). Terrestrial plant ecology. Menlo Park, California: The Benjamin/Cummings.

Chicago

Barbour Michael G, Pitts Wanna D, Burk Jack H, Gilliam Frank S and Schwartz Mark W. 1999. Terrestrial plant ecology. Menlo Park, California: The Benjamin/Cummings.

Harvard

Barbour M. G., Pitts W. D., Burk J. H., Gilliam F. S. and Schwartz M. W. (1999). Terrestrial plant ecology. Menlo Park, California: The Benjamin/Cummings.

MLA

Barbour Michael G, Pitts Wanna D, Burk Jack H, Gilliam Frank S and Schwartz Mark W. Terrestrial plant ecology. Menlo Park, California: The Benjamin/Cummings. 1999.