Cita APA (7a ed.)

Halim, S., & Halim, F. (2013). Competitive programming 3: The new lower bound of programming contests (3rd edition.). Lulu.com.

Cita Chicago Style (17a ed.)

Halim, Steven, y Felix Halim. Competitive Programming 3: The New Lower Bound of Programming Contests. 3rd edition. Singapore: Lulu.com, 2013.

Cita MLA (8a ed.)

Halim, Steven, y Felix Halim. Competitive Programming 3: The New Lower Bound of Programming Contests. 3rd edition. Lulu.com, 2013.