Atkinson, Leslie D.
Macmillan, 1985
Buku Teks
Brill, Esther Levine
Appleton-Century-Crofts , 1986
Buku Teks
Monica, Elaine L.
Addison-Wesley, 1979
Buku Teks
Kee, Joyce LeFever
W.B. Saunders , 1993
Buku Teks
Lynn, Pamela Barbara, 1961-
Wolters Kluwer/Lippincott Williams & Wilkins, 2011
Buku Teks SO