Dutwin, P., & Diamond, H. (1991). Writing the easy way: For school, business, and personal situations (2nd ed.). Barron's.
Cytowanie według stylu Chicago (wyd. 17)Dutwin, Phyllis, i Harriet Diamond. Writing the Easy Way: For School, Business, and Personal Situations. 2nd ed. New York: Barron's, 1991.
Cytowanie według stylu MLA (wyd. 9)Dutwin, Phyllis, i Harriet Diamond. Writing the Easy Way: For School, Business, and Personal Situations. 2nd ed. Barron's, 1991.