Παραπομπή APA

Harding, W., & Moore, P. J. (1927). Hirudinea. Taylor and francis.

Παραπομπή Chicago Style

Harding, W.A, και Percy J. Moore. Hirudinea. London: Taylor and francis, 1927.

Παραπομπή MLA

Harding, W.A, και Percy J. Moore. Hirudinea. Taylor and francis, 1927.