APA (7th ed.) Citation

Hagen, H. A. Some Psocina of the United States. Wiley.

Chicago Style (17th ed.) Citation

Hagen, Herman August. Some Psocina of the United States. Wiley.

MLA (9th ed.) Citation

Hagen, Herman August. Some Psocina of the United States. Wiley.

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