APA (7th ed.) Citation

Hagen, H. A. (1885). Monograph of the earlier stages of the Odonata. Sub-families Gomphina and Cordulegastrina. Zenodo.

Chicago Style (17th ed.) Citation

Hagen, Hermann August. Monograph of the Earlier Stages of the Odonata. Sub-families Gomphina and Cordulegastrina. Zenodo, 1885.

MLA (9th ed.) Citation

Hagen, Hermann August. Monograph of the Earlier Stages of the Odonata. Sub-families Gomphina and Cordulegastrina. Zenodo, 1885.

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