Παραπομπή APA

Hartwick, J. M. (2015). Urban Economics (Ed.1.). Routledge.

Παραπομπή Chicago Style

Hartwick, John M. Urban Economics. Ed.1. Newyork: Routledge, 2015.

Παραπομπή MLA

Hartwick, John M. Urban Economics. Ed.1. Routledge, 2015.