Howell, Signe
Oxford Univertity Press, 1984
Buku Teks
Routledge , 1997
Buku Teks
Othman Mohd. Yatim, author
Museum Association of Malaysia, 1988
Buku Teks
I. Faridah-Hanum, author
UNDP, 2005
Buku Teks
Rusea Go, author
Forest Research Institute Malaysia (FRIM), 2008
Buku Referensi