APA (7th ed.) Citation

Pschorn-Walcher, H. (1971). Hymenoptera. Heloridae et Proctotrupidae. Fotorotar.

Chicago Style (17th ed.) Citation

Pschorn-Walcher, Hubert. Hymenoptera. Heloridae Et Proctotrupidae. Zürich: Fotorotar, 1971.

MLA (9th ed.) Citation

Pschorn-Walcher, Hubert. Hymenoptera. Heloridae Et Proctotrupidae. Fotorotar, 1971.

Warning: These citations may not always be 100% accurate.