APA (7th ed.) Citation

Foy, B. D. (2018). Learning Perl 6: Keeping the easy, hard, and impossible within reach. O'Reilly.

Chicago Style (17th ed.) Citation

Foy, Brian D. Learning Perl 6: Keeping the Easy, Hard, and Impossible Within Reach. Beijing: O'Reilly, 2018.

MLA (9th ed.) Citation

Foy, Brian D. Learning Perl 6: Keeping the Easy, Hard, and Impossible Within Reach. O'Reilly, 2018.

Warning: These citations may not always be 100% accurate.