Walpole, Ronald E., author
Gramedia Pustaka Utama, 1993
Buku Teks
oleh David Lucas; penerjemah Nin Bakdi Sumanto
Gadjah Mada University Press , 1990
Buku Teks
Gritter, Roy J., author
ITB Press, 1991
Buku Teks
Hutabarat, Sahala, author
UI-Press, 1985
Buku Teks
Trewartha, Glenn T., author
Gadjah Mada University Press, 1995
Buku Teks