King, Imogene M.
Appletton Century Crofts , 1982
Buku Teks SO
Abbott, Janet S.
Harcourt Brace Javanovich, 1987
Buku Teks SO
Zajac, Alfed
D.C. Heath, 1966
Buku Teks SO
Talaro, Kathleen Park
McGraw-Hill, Higher education, 2005
Buku Teks
Moreno, Francisco Jose
Creative Art Book, 2000
Buku Teks