Gullan, P. J. The Insects: An outline of entomology (1ST ED.).
Chicago Style (17th ed.) ZitazioaGullan, P. J. The Insects: An Outline of Entomology. 1ST ED. N.
MLA (9th ed.) ZitazioaGullan, P. J. The Insects: An Outline of Entomology. 1ST ED.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.