APA-ийн эшлэл(7 дахь хэвлэлт)

Fonseca Alfonso, Y. L. (2019). The agony of labor law: A history from its origins to its confines. Universidad Pedagógica y Tecnológica de Colombia.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Fonseca Alfonso, Yair Leonardo. The Agony of Labor Law: A History from Its Origins to Its Confines. Universidad Pedagógica y Tecnológica de Colombia, 2019.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Fonseca Alfonso, Yair Leonardo. The Agony of Labor Law: A History from Its Origins to Its Confines. Universidad Pedagógica y Tecnológica de Colombia, 2019.