APA (7th ed.) Citation

Vecht, J. v. d. (1962). The Indo-Australian species of the genus Ropalidia (Icaria) (Hymenoptera, Vespidae). E.J. Brill.

Chicago Style (17th ed.) Citation

Vecht, Jacobus van der. The Indo-Australian Species of the Genus Ropalidia (Icaria) (Hymenoptera, Vespidae). Leiden: E.J. Brill, 1962.

MLA (9th ed.) Citation

Vecht, Jacobus van der. The Indo-Australian Species of the Genus Ropalidia (Icaria) (Hymenoptera, Vespidae). E.J. Brill, 1962.