Smithsonian Institution. Office of the Secretary, Killip, E. P., & Lobb, W. (1932). Botanical collections of William Lobb in Colombia. [publisher not identified].
Chicago Style (17th ed.) CitationSmithsonian Institution. Office of the Secretary, Ellsworth P. Killip, and William Lobb. Botanical Collections of William Lobb in Colombia. Washington, D.C.: [publisher not identified], 1932.
MLA (9th ed.) CitationSmithsonian Institution. Office of the Secretary, et al. Botanical Collections of William Lobb in Colombia. [publisher not identified], 1932.
Warning: These citations may not always be 100% accurate.