APA (7th ed.) Citation

Verheij, A. J. C. (1994). Grammatica digitalis. Grammatica digitalis.

Chicago Style (17th ed.) Citation

Verheij, Arie Jan Christofoor. "Grammatica Digitalis." Grammatica Digitalis 1994.

MLA (8th ed.) Citation

Verheij, Arie Jan Christofoor. "Grammatica Digitalis." Grammatica Digitalis, 1994.

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