APA (7th ed.) Citation

Handlo, R. d., Lefferts, P., & Hanboys, J. (1991). Regule =: The rules. University of Nebraska Press.

Chicago Style (17th ed.) Citation

Handlo, Robertus de, Peter Lefferts, and Johannes Hanboys. Regule =: The Rules. Lincoln: University of Nebraska Press, 1991.

MLA (9th ed.) Citation

Handlo, Robertus de, et al. Regule =: The Rules. University of Nebraska Press, 1991.