Glenister, A.G.
Oxford University Press, 1971
Buku Referensi
Peterson, Roger Tory, author
Houghton Miffiln, 1980
Buku Referensi
Audubon, John James, author
Macmillan, 1985
Buku Referensi
Mason, Victor
Periplus Editions, 1989
Buku Referensi
Wright, Judith, 1915-2000, author
Angus and Robertson, 1962
Koleksi Publik