Vivas Silva, C. J., Murillo Chiquillo, Z. L., & Cristancho Chinome, J. R. (2017). Scratch. Didactic strategy to learn the multiplication table in new school. Universidad Pedagógica y Tecnológica de Colombia.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVivas Silva, Carlos Julio, Zulma Lucía Murillo Chiquillo, और Jaime Ricardo Cristancho Chinome. Scratch. Didactic Strategy to Learn the Multiplication Table in New School. Universidad Pedagógica y Tecnológica de Colombia, 2017.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVivas Silva, Carlos Julio, et al. Scratch. Didactic Strategy to Learn the Multiplication Table in New School. Universidad Pedagógica y Tecnológica de Colombia, 2017.
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