Ramsay, J.A.
Physiological approach to the lower animals / J.A. Ramsay
Cambridge University Press, 1977
 Buku Teks
Ruppert, Edward E.
Invertebrate zoology
Saunders College, 1994
 Buku Teks
Russell-Hunter, W.D.
A life of invertebrates / W.D. Russell-Hunter
Macmillan Publishing Co., 1979
 Buku Teks
Tombes, A.S.
An introduction to invertebrate to endocrinology / A.S. Tombes
Academic Press, 1970
 Buku Teks
Moore, Raymond C.
Invertebrate fossils
McGraw-Hill, 1952
 Buku Teks