Smithsonian Institution. Office of the Secretary & Greene, E. L. (1909). Landmarks of botanical history, study of certain epochs in development of science of botany, Part I: Prior to 1562 A.D. [publisher not identified].
Chicago Style (17th ed.) CitationSmithsonian Institution. Office of the Secretary and Edward Lee Greene. Landmarks of Botanical History, Study of Certain Epochs in Development of Science of Botany, Part I: Prior to 1562 A.D. Washington, D.C.: [publisher not identified], 1909.
MLA (9th ed.) CitationSmithsonian Institution. Office of the Secretary and Edward Lee Greene. Landmarks of Botanical History, Study of Certain Epochs in Development of Science of Botany, Part I: Prior to 1562 A.D. [publisher not identified], 1909.
Warning: These citations may not always be 100% accurate.