APA (7th ed.) Citation

Barber, H. G. Synoptic Keys to the Lygaeidae (Hemiptera) of The United States. Wiley.

Chicago Style (17th ed.) Citation

Barber, H. G. Synoptic Keys to the Lygaeidae (Hemiptera) of The United States. Wiley.

MLA (9th ed.) Citation

Barber, H. G. Synoptic Keys to the Lygaeidae (Hemiptera) of The United States. Wiley.

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