Committee on Indexing Procedures. (1968). Indexing procedures for 15 virus diseases of citrus trees. Department of Agriculture.
Chicago-referens (17:e uppl.)Committee on Indexing Procedures. Indexing Procedures for 15 Virus Diseases of Citrus Trees. Washington, D.C: Department of Agriculture, 1968.
MLA-referens (9:e uppl.)Committee on Indexing Procedures. Indexing Procedures for 15 Virus Diseases of Citrus Trees. Department of Agriculture, 1968.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.