Singer, Erwin
Random House, 1965
Buku Teks
Totok S. Wiryasaputra
Pustaka Referensi , 2019
Buku Teks
edited by Brent D. Slife, Richard N. Williams, and Sally H. Barlow
Sage, 2001
Buku Teks
Whitaker, Carl A.
Blakiston, 1953
Buku Teks
Bateman, Anthony
Brunner-Routledge, 2003
Buku Teks