United States. Bureau of Entomology & Hopkins, A. D. (1908). Suggestions to correspondents for collection of specimens and making of observations. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Bureau of Entomology and A. D. Hopkins. Suggestions to Correspondents for Collection of Specimens and Making of Observations. Washington, D.C.: [publisher not identified], 1908.
MLA (9th ed.) CitationUnited States. Bureau of Entomology and A. D. Hopkins. Suggestions to Correspondents for Collection of Specimens and Making of Observations. [publisher not identified], 1908.
Warning: These citations may not always be 100% accurate.