edited by E.U. Condon and Hugh Odishaw
McGraw-Hill, 1958
Buku Referensi
Stiles, Karl A., author
McGraw-Hill, 1968
Buku Referensi
Carpenito-Moyet, Lynda Juall, author
J.B. Lippincott , 1984
Buku Teks
Carpenito-Moyet, Lynda Juall, author
Lippincott, 1997
Buku Teks
edited by David C. Berliner and Robert C. Calfee
MacMillan Library Reference USA, 1996
Buku Referensi