APA (7. basım) Alıntı

Tirado Mejía, Á. (2016). Economic, social and cultural Changes in the Sixties of the twentieth century. Universidad Pedagógica y Tecnológica de Colombia.

Chicago Style (17. basım) Atıf

Tirado Mejía, Álvaro. Economic, Social and Cultural Changes in the Sixties of the Twentieth Century. Universidad Pedagógica y Tecnológica de Colombia, 2016.

MLA (9th ed.) Atıf

Tirado Mejía, Álvaro. Economic, Social and Cultural Changes in the Sixties of the Twentieth Century. Universidad Pedagógica y Tecnológica de Colombia, 2016.