Butler, E., Hickman, M. A., & Overby, L. (1983). Correct writing (3rd ed.). D.C. Heath and Company.
Chicago Style (17. basım) AtıfButler, Eugenia, Mary Ann Hickman, ve Lalla Overby. Correct Writing. 3rd ed. Lexington: D.C. Heath and Company, 1983.
MLA (9th ed.) AtıfButler, Eugenia, et al. Correct Writing. 3rd ed. D.C. Heath and Company, 1983.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..