Audubon, John James
Macmillan, 1985
Buku Referensi
Mason, Victor
Periplus Editions, 1989
Buku Referensi
Wright, Judith, 1915-2000
Angus and Robertson, 1962
Koleksi Publik
edited by Christopher M. Perrins and Alex L.A. Middleton
Grolier International, 1993
Buku Referensi
edited by Bruce Campbell and Elizabeth Lack
Buteo Books, 1985
Buku Referensi