Petrides, George A.
A field guide to eastern trees : eastern United States and Canada
Houghton Mifflin, 1988
 Buku Teks
Chu, Hung-fu, 1913-
How to know the immature insects
Wm.C. Brown Communication, 1992
 Buku Teks
Nursing know-how interpreting ECGs
edited by Jennifer P. Kowalak
Lippincott Williams & Wilkins, 2009
 Buku Teks SO
Borror, Donald J.
A field guide to the insects of America north of Mexico
Houghton Mifflin, 1976
 Buku Referensi
Burt, William Henry
A field guide to the mammals : field marks of all North American species found north of Mexico
Houghton Miffiln, 1976
 Buku Referensi