Hemily, Brendon; King, Rolland D. (2008). "One: Introduction". Uses of Higher Capacity Buses in Transit Service (Report). Transit Cooperative Research Program. doi:10.17226/13919. ISBN978-0-309-09804-5. direct URL (PDF)
Hemily, Brendon; King, Rolland D. (2008). "One: Introduction". Uses of Higher Capacity Buses in Transit Service (Report). Transit Cooperative Research Program. doi:10.17226/13919. ISBN978-0-309-09804-5. direct URL (PDF)