* J. Moore (editor); "An Introduction to the Invertebrates"; Cambridge University Press* L. Gilbertson; "Zoology Laboratory Manual"; The McGraw-Hill Companies, Inc; ISBN 0-07-237716-X (4th edition, 1999).
* J. Moore (editor); "An Introduction to the Invertebrates"; Cambridge University Press* L. Gilbertson; "Zoology Laboratory Manual"; The McGraw-Hill Companies, Inc; ISBN 0-07-237716-X (4th edition, 1999).