Não informado. (2004). Journal of Public Transportation. University of South Florida, National Center for Transit Research.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Journal of Public Transportation. Tampa, Fla: University of South Florida, National Center for Transit Research, 2004.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Journal of Public Transportation. University of South Florida, National Center for Transit Research, 2004.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.