Proof-of-payment (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Proof-of-payment" in English language version.

refsWebsite

Global rank English rank

8,132^nd place

5,327^th place

1^st place

6,482^nd place

3,569^th place

pdx.edu

Wagner, Daniel; Harper, Wesley; Schueftan, Oliver (1986-09-01). "Self-Service Fare Collection on Buses in Portland, OR". TriMet Collection.

"Muni to begin all-door boarding for buses on July 1". San Francisco Examiner. Archived from the original on April 26, 2012. Retrieved March 17, 2012.

"Muni to begin all-door boarding for buses on July 1". San Francisco Examiner. Archived from the original on April 26, 2012. Retrieved March 17, 2012.