Smithsonian Institution. Office of the Secretary & Snodgrass, R. E. (1931). Morphology of insect abdomen: Part I, General structure of abdomen and its appendages. [publisher not identified].
Chicago Style (17th ed.) CitationSmithsonian Institution. Office of the Secretary and R. E. Snodgrass. Morphology of Insect Abdomen: Part I, General Structure of Abdomen and Its Appendages. Washington, D.C.: [publisher not identified], 1931.
MLA (9th ed.) CitationSmithsonian Institution. Office of the Secretary and R. E. Snodgrass. Morphology of Insect Abdomen: Part I, General Structure of Abdomen and Its Appendages. [publisher not identified], 1931.
Warning: These citations may not always be 100% accurate.