United States. Bureau of Entomology. (1933). Observations on Mexican fruit fly and some related species in Cuernavaca, Mexico, in 1928 and 1929. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of Entomology. Observations on Mexican Fruit Fly and Some Related Species in Cuernavaca, Mexico, in 1928 and 1929. [Washington]: [s.n.], 1933.
MLA (9th ed.) CitationUnited States. Bureau of Entomology. Observations on Mexican Fruit Fly and Some Related Species in Cuernavaca, Mexico, in 1928 and 1929. [s.n.], 1933.
Warning: These citations may not always be 100% accurate.