edited by Martin Edwards
Foulsham, 1993
Buku Referensi
Desi Anwar, Author
PT Gramedia Pustaka Utama, 2024
Buku Teks
Bird, Richard M., author
Ward Lock, 1995
Buku Teks
Brennan, Lynne, author
Platkus, 1991
Buku Teks
Flast, Robert, author
Berkely, California Osborne McGraw-Hill 1986,
Buku Teks