APA (7 ম সংস্করণ) উদ্ধৃতি

Halim, S., Halim, F., & Effendy, S. (2020). Competitive programming 4: The lower bound of programming contests in the 2020s. Ingram content group.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Halim, Steven, Felix Halim, এবং Suhendry Effendy. Competitive Programming 4: The Lower Bound of Programming Contests in the 2020s. United States, UK: Ingram content group, 2020.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Halim, Steven, et al. Competitive Programming 4: The Lower Bound of Programming Contests in the 2020s. Ingram content group, 2020.