Pantry, Sheila, author
Facet Publishing, 2003
Buku Teks
Carlson, Richard, 1961-, author
Gramedia Pustaka Utama , 2003
Buku Teks
Oscar Handlin ... [et.al] author
Belknap Press, 1963
Buku Teks
AMCHAM Ind, 1993
Buku Referensi
Johnson, David W., 1940-, author
Prentice-Hall, 1987
Buku Teks