Leininger, Madeleine M., author
John Wiley & Sons, 1978
Buku Teks
White, James E. , author
Wadsworth and Cengage Learning, 2012
Buku Teks
edited by T.E. Hall, P.R. Jones, G.B. Preston
Academic Press, 1980
Buku Teks
Edey, Harold C.
Garland Publishing , 1982
Buku Teks
Hayes, James L., author
Amacom , 1983
Buku Teks