Cita APA (7a ed.)

Petrik, R. (2022). Schaum's Discrete Problem 2.21: Ordered Pairs. McGraw-Hill Education LLC..

Cita Chicago Style (17a ed.)

Petrik, Rachel. Schaum's Discrete Problem 2.21: Ordered Pairs. New York, N.Y.: McGraw-Hill Education LLC., 2022.

Cita MLA (8a ed.)

Petrik, Rachel. Schaum's Discrete Problem 2.21: Ordered Pairs. McGraw-Hill Education LLC., 2022.