United States. Department of Agriculture. Office of the Secretary & Show, S. B. (1930). Forest nursery and planting practice in California pine region. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary and S. B. Show. Forest Nursery and Planting Practice in California Pine Region. Washington: U.S. GPO, 1930.
MLA (9th ed.) CitationUnited States. Department of Agriculture. Office of the Secretary and S. B. Show. Forest Nursery and Planting Practice in California Pine Region. U.S. GPO, 1930.
Warning: These citations may not always be 100% accurate.