Ajeng Wind
Ensiklopedia adaptasi di alam raya
Bhuana Ilmu Populer, 2018
 Buku Teks
The Encyclopedia of mammals: 1
edited by David Macdonald
Grolier International, 1993
 Buku Referensi
The encyclopedia of libertarianism
editor, Ronald Hamowy
Sage Publications, 2008
 Buku Referensi
Sloane, Thomas O.
Encyclopedia of rhetoric
Oxford University Press, 2001
 Buku Referensi
The encyclopedia American
Americana Corporation, 1980
 Buku Referensi