Dutwin, P., & Diamond, H. (1991). Writing the easy way: For school, business, and personal situations (2nd ed.). Barron's.
Παραπομπή σε μορφή Chicago (17η εκδ.)Dutwin, Phyllis, και Harriet Diamond. Writing the Easy Way: For School, Business, and Personal Situations. 2nd ed. New York: Barron's, 1991.
Παραπομπή σε μορφή MLA (9th εκδ.)Dutwin, Phyllis, και Harriet Diamond. Writing the Easy Way: For School, Business, and Personal Situations. 2nd ed. Barron's, 1991.