Παραπομπή σε μορφή APA (7η εκδ.)

Serrano Martinez, J. M., & King, R. (1994). Urban systems and regional organisation in Spain. University of Sussex, Geography Laboratory.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Serrano Martinez, Jose Maria, και Russell King. Urban Systems and Regional Organisation in Spain. Brighton: University of Sussex, Geography Laboratory, 1994.

Παραπομπή σε μορφή MLA (9th εκδ.)

Serrano Martinez, Jose Maria, και Russell King. Urban Systems and Regional Organisation in Spain. University of Sussex, Geography Laboratory, 1994.