Lingguo Bu, and Angel Marjanovich. “Percentages and Milk Fat.” Mathematics Teaching in the Middle School, vol. 22, no. 8, 2017, pp. 472–479., www.jstor.org/stable/10.5951/mathteacmiddscho.22.8.0472. Accessed 31 Oct. 2020.
Lingguo Bu, & Angel Marjanovich. (2017). Percentages and Milk Fat. Mathematics Teaching in the Middle School, 22(8), 472-479. Retrieved October 31, 2020, from http://www.jstor.org/stable/10.5951/mathteacmiddscho.22.8.0472
Lingguo Bu, and Angel Marjanovich. "Percentages and Milk Fat." Mathematics Teaching in the Middle School 22, no. 8 (2017): 472-79. Accessed October 31, 2020. http://www.jstor.org/stable/10.5951/mathteacmiddscho.22.8.0472.
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