APA Format

37905. (2007). Worldmark Encyclopedia of the States, Seventh Edition. : Thomson Gale

MLA Format

37905. Worldmark Encyclopedia of the States, Seventh Edition. : Thomson Gale, 2007

Chicago Format

37905. Worldmark Encyclopedia of the States, Seventh Edition. : Thomson Gale, 2007

Australian/Harvard Format

37905. 2007. Worldmark Encyclopedia of the States, Seventh Edition. Thomson Gale