Cohen, Felissa L.
J.b. Lippincott , 1984
Buku Teks
edited by Jeyanth Asheervath and Dorothy R. Blevins
Appleton-Century-Crofts, 1986.
Buku Referensi
edited by Beverly J. Rambo, Lucile A. Wood
W.B. Saunders, 1982
Buku Teks SO
Matloff, Ellen T.
Wolters Kluwer, 2013
Buku Teks
Beyers, Marjorie
Little, Brown, 1984, 1984
Buku Teks