Gibson, John, 1907-, author
EGC, 2003
Buku Teks
Pearce, Evelyn C. (Evelyn Clare), author
Gramedia Pustaka Utama, 1979
Buku Teks
Anderson, Paul D., author
EGC, 1996
Buku Teks
Pearce, Evelyn C. (Evelyn Clare), author
Gramedia, 1991
Buku Teks
Anderson, Paul D., author
EGC, 1996
Buku Teks