APA (7th ed.) Citation

Penzer, G., Penzer, G. R., & Radda, G. (1969). Studies in the chemistry of flavins and flavoproteins.

Chicago Style (17th ed.) Citation

Penzer, G., Geoffrey R. Penzer, and G. Radda. Studies in the Chemistry of Flavins and Flavoproteins. 1969.

MLA (9th ed.) Citation

Penzer, G., et al. Studies in the Chemistry of Flavins and Flavoproteins. 1969.