APA

Field W. D., Dos Passos C. F. & Masters J. H. (1974). A bibliography of the catalogs, lists, faunal and other papaers on the butterflies of north America narth of Mexico arranged by state and province (Lepidoptera:Rhopalocera). Washington: Smithsonian Institution.

Chicago

Field William D, Dos Passos Cyrial F and Masters John H. 1974. A bibliography of the catalogs, lists, faunal and other papaers on the butterflies of north America narth of Mexico arranged by state and province (Lepidoptera:Rhopalocera). Washington: Smithsonian Institution.

Harvard

Field W. D., Dos Passos C. F. and Masters J. H. (1974). A bibliography of the catalogs, lists, faunal and other papaers on the butterflies of north America narth of Mexico arranged by state and province (Lepidoptera:Rhopalocera). Washington: Smithsonian Institution.

MLA

Field William D, Dos Passos Cyrial F and Masters John H. A bibliography of the catalogs, lists, faunal and other papaers on the butterflies of north America narth of Mexico arranged by state and province (Lepidoptera:Rhopalocera). Washington: Smithsonian Institution. 1974.