Παραπομπή σε μορφή APA (7η εκδ.)

Robbins, D. J. (2003). Trade opening and distribution in Colombia a time-series analysis of colombia's seven principal cities. Facultad de Ciencias Económicas y Administrativas.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Robbins, Donald J. Trade Opening and Distribution in Colombia a Time-series Analysis of Colombia's Seven Principal Cities. Bogotá (Colombia): Facultad de Ciencias Económicas y Administrativas, 2003.

Παραπομπή σε μορφή MLA (9th εκδ.)

Robbins, Donald J. Trade Opening and Distribution in Colombia a Time-series Analysis of Colombia's Seven Principal Cities. Facultad de Ciencias Económicas y Administrativas, 2003.