Heard, J. N., Hoover, J. H., & Hamsa, C. F. (1977). Bookman's guide to Americana (7th ed.). Scarecrow Press.
Chicago Style (17th ed.) CitationHeard, J. Norman, Jimmie H. Hoover, and Charles F. Hamsa. Bookman's Guide to Americana. 7th ed. Metuchen, N.J.: Scarecrow Press, 1977.
MLA (9th ed.) CitationHeard, J. Norman, et al. Bookman's Guide to Americana. 7th ed. Scarecrow Press, 1977.
Warning: These citations may not always be 100% accurate.