APA (7th ed.) Citation

Crutcher, P. D., Singh, N. K., & Tiegs, P. (2021). Essential computer science: A programmers guide to foundational concepts (1st ed. 2021.). APress.

Chicago Style (17th ed.) Citation

Crutcher, Paul D., Neeraj Kumar Singh, and Peter Tiegs. Essential Computer Science: A Programmers Guide to Foundational Concepts. 1st ed. 2021. [Place of publication not identified]: APress, 2021.

MLA (9th ed.) Citation

Crutcher, Paul D., et al. Essential Computer Science: A Programmers Guide to Foundational Concepts. 1st ed. 2021. APress, 2021.