APA (7th ed.) Zitazioa

Johnson, D. W. (1993). Reaching out: Interpersonal effectiveness and ... (5th.ed.). Allyn and Bacon.

Chicago Style (17th ed.) Zitazioa

Johnson, David W. Reaching Out: Interpersonal Effectiveness and ... 5th.ed. Boston: Allyn and Bacon, 1993.

MLA (9th ed.) Zitazioa

Johnson, David W. Reaching Out: Interpersonal Effectiveness and ... 5th.ed. Allyn and Bacon, 1993.