Cleave, Cheryl
Essentials of technical mathematics / Cheryl Cleaves, Margie Hobbs.
Prentice-Hall, 2002
 Buku Teks SO
Hobbs, F.D.
Planning for engineers and surveyors / Hobbs, F.D. ; J.F. Doling
Pergamon Press, 1981
 Buku Teks
Jack Lang
edited by Heather Radi, Peter Spearritt
Hale & Iremonger, 1977
 Buku Teks SO
Pasaribu, Yosua Adrian
Konteks budaya motif binatang pada seni cadas prasejarah di Sulawesi Selatan = Cultural context of animal motifs in the prehistoric rock art of South Sulawesi
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2016
 UI - Tesis Membership
Young, J.Z.
The life of mammals: their anatomy and physiology / J.Z. Young with the assistance of M.J. Hobbs
Clarendon Press, 1975
 Buku Teks SO