Erdos, P. L., & Morgan, A. J. (1983). Professional mail surveys (Rev. ed.). Krieger Pub. Co..
Chicago Style (17th ed.) CitationErdos, Paul L., and Arthur J. Morgan. Professional Mail Surveys. Rev. ed. Malabar, Fla.: Krieger Pub. Co., 1983.
MLA (9th ed.) CitationErdos, Paul L., and Arthur J. Morgan. Professional Mail Surveys. Rev. ed. Krieger Pub. Co., 1983.
Warning: These citations may not always be 100% accurate.