Cita APA (7th ed.)
Potbury, S. S. Eocene Flora of western America.
Cita Chicago (17th ed.)
Potbury, Susan S. Eocene Flora of Western America.
Cita MLA (9th ed.)
Potbury, Susan S. Eocene Flora of Western America.
Atenció: Aquestes cites poden no estar 100% correctes.