Gaya APA

Halim, S. et al ([2020]). Competitive programming 4 : The lower bound of programming contest in the 2020s buku 1 (Volume Pertama). [tempat publikasi tidak teride: SIMCC dan Noble Education.

Gaya MLA

Halim, Steven. et al. "Competitive programming 4 : The lower bound of programming contest in the 2020s buku 1". Volume Pertama [tempat publikasi tidak teride: SIMCC dan Noble Education, [2020]. Text.