APA (7th ed.) Citation

Leestma, S., & Nyhoff, L. (1989). Programming and problem solving in Modula-2. Macmillan u.a.

Chicago Style (17th ed.) Citation

Leestma, Sanford, and Larry Nyhoff. Programming and Problem Solving in Modula-2. New York u.a: Macmillan u.a, 1989.

MLA (9th ed.) Citation

Leestma, Sanford, and Larry Nyhoff. Programming and Problem Solving in Modula-2. Macmillan u.a, 1989.