Williams, Marta
Learning their language: intuitive communication with animals and nature
New World Library, 2003
 Buku Teks
The handbook of classroom discourse and interaction
edited by Numa Markee
Wiley Blackwell, 2015
 Buku Teks
Morris, Desmond
The naked ape
Dell Publishing, 1970
 Buku Teks
Morris, Desmond
The naked ape : a zoologists study of the human animal
Jonathan Cape, 1969
 Buku Teks
Tatang Mitra Setia
Hirarki dominansi orangutan jantan dewasa serta tanggapan orangutan jantan dan betina dewasa terhadap seruan panjang dari jantan dewasa lain di Pusat Penelitian Ketambe, Taman Nasional Gunung Leuser
1995
 UI - Tesis Membership