APA (7th ed.) Citation

Frey, H. Happy Birthday, Rolf Mülhaupt! Wiley-VCH.

Chicago Style (17th ed.) Citation

Frey, Holger. Happy Birthday, Rolf Mülhaupt! Wiley-VCH.

MLA (9th ed.) Citation

Frey, Holger. Happy Birthday, Rolf Mülhaupt! Wiley-VCH.

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