APA-viite (7. p.)

Sharp, D. W. (1984). Writing business letters with a personal touch. Lifetime Learning Pub.

Chicago-viite (17. p.)

Sharp, Deborah Whittlesey. Writing Business Letters with a Personal Touch. Belmont, Calif: Lifetime Learning Pub, 1984.

MLA-viite (9. p.)

Sharp, Deborah Whittlesey. Writing Business Letters with a Personal Touch. Lifetime Learning Pub, 1984.