Animal identification: a reference guide; Vol II
editor, R.W. Sims
British Museum (Natural History), 1980
 Buku Referensi
Pandey, B.N.
Ecology and animal behaviour; Vol. 4
Tata McGraw-Hill, 2012
 Buku Teks
Sonnenschein, William Swan
The Best books: a reader's guide and literary reference book, being a contribution towards systematic bibliography, part III
George Routledge and Sons, 1969
 Buku Referensi
Pfeiffer, J. William
Reference guide to handbooks and annuals: 1985 edition. vol. I-X and '72-85 annuals / J. William Pfeiffer
University Associates, 1985
 Buku Teks
Owen, George E.
Fundamentals of electronics Vol. III
Harper and Row, 1967
 Buku Teks