United States. Bureau of Plant Industry, Chase, A., & Hitchcock, A. S. (1909). Directions for preparing herbarium specimens of grasses. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Bureau of Plant Industry, Agnes Chase, and A. S. Hitchcock. Directions for Preparing Herbarium Specimens of Grasses. Washington, D.C.: [publisher not identified], 1909.
MLA (9th ed.) CitationUnited States. Bureau of Plant Industry, et al. Directions for Preparing Herbarium Specimens of Grasses. [publisher not identified], 1909.
Warning: These citations may not always be 100% accurate.