APA (7th ed.) Citation

Sacken, C. R. O. Note on North American Trypetidae. Wiley.

Chicago Style (17th ed.) Citation

Sacken, Charles Robert Osten. Note on North American Trypetidae. Wiley.

MLA (9th ed.) Citation

Sacken, Charles Robert Osten. Note on North American Trypetidae. Wiley.

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