Cita APA (7a ed.)

Leestma, S., & Nyhoff, L. R. (1990). Pascal: Programming and problem solving (3rd ed.). Macmillan ; Collier Macmillan.

Cita Chicago Style (17a ed.)

Leestma, Sanford, y Larry R. Nyhoff. Pascal: Programming and Problem Solving. 3rd ed. New York : London: Macmillan ; Collier Macmillan, 1990.

Cita MLA (9a ed.)

Leestma, Sanford, y Larry R. Nyhoff. Pascal: Programming and Problem Solving. 3rd ed. Macmillan ; Collier Macmillan, 1990.