Alexander, R. McNeill
The chordates / R. McNeill Alexander
Cambridge University Press, 1981
 Buku Teks SO
Nieuwkoop, Pieter D.
Primordial germ cells in the chordates: embryogenesis and phylogenesis / Pieter D. Nieuwkoop, Lien A. Sutasurya
Cambridge University Press, 1979
 Buku Teks SO
Weichert, Charles K.
Anatomy of the chordates
McGraw-Hill, 1970
 Buku Teks SO
Weichert, Charles K.
Elements of chordate anatomy/ Charles K. weichert, William Presch
McGraw-Hill, 1984
 Buku Teks SO
Weichert, Charles K.
Elements of chordate anatomy
McGraw-Hill, 1959
 Buku Teks SO