APA (7th ed.) Citation

Gumbert, J. P., & Gruys, A. (1976). Codicologica: 1, Théories et principes. E.J. Brill.

Chicago Style (17th ed.) Citation

Gumbert, J. P., and A. Gruys. Codicologica: 1, Théories Et Principes. Leiden: E.J. Brill, 1976.

MLA (9th ed.) Citation

Gumbert, J. P., and A. Gruys. Codicologica: 1, Théories Et Principes. E.J. Brill, 1976.