APA (7th ed.) Citation

Helman, P. (1986). Intermediate problem solving and data structures: Walls and mirrors. Cummings.

Chicago Style (17th ed.) Citation

Helman, Paul. Intermediate Problem Solving and Data Structures: Walls and Mirrors. Menlo Park, Calif: Cummings, 1986.

MLA (9th ed.) Citation

Helman, Paul. Intermediate Problem Solving and Data Structures: Walls and Mirrors. Cummings, 1986.