APA Style

Halim, Steven, Halim, Felix, Effendy, Suhendry. (2020). Competitive programming 4 : the lower bound of programming contest in the 2020s. Book 1. (Book 1 : Chapter 1-4). : SIMCC & Noble Education.

Chicago Style

Halim, Steven, Halim, Felix, Effendy, Suhendry. Competitive programming 4 : the lower bound of programming contest in the 2020s. Book 1.. Book 1 : Chapter 1-4 : SIMCC & Noble Education, 2020. Text.

MLA Style

Halim, Steven, Halim, Felix, Effendy, Suhendry. Competitive programming 4 : the lower bound of programming contest in the 2020s. Book 1.. Book 1 : Chapter 1-4 : SIMCC & Noble Education, 2020. Text.

Turabian Style

Halim, Steven, Halim, Felix, Effendy, Suhendry. Competitive programming 4 : the lower bound of programming contest in the 2020s. Book 1.. Book 1 : Chapter 1-4 : SIMCC & Noble Education, 2020. Print.