Becerra Peña, S., Martínez Quiroga, L. O., & Bolívar Suárez, A. (2019). The orthography from grandfather anecdotal stories. Universidad Pedagógica y Tecnológica de Colombia.
Čikaški stil citiranja (17. izdanje)Becerra Peña, Samuel, Luis Orlando Martínez Quiroga, i Alejandro Bolívar Suárez. The Orthography from Grandfather Anecdotal Stories. Universidad Pedagógica y Tecnológica de Colombia, 2019.
MLA način citiranja (9. izdanje)Becerra Peña, Samuel, et al. The Orthography from Grandfather Anecdotal Stories. Universidad Pedagógica y Tecnológica de Colombia, 2019.
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