Dyfyniad APA

Curtis, C., & Low, N. (2012). Institutional barriers to sustainable transport. Ashgate.

Dyfyniad Arddull Chicago

Curtis, Carey, and Nicholas Low. Institutional Barriers to Sustainable Transport. Burlington, Vt.: Ashgate, 2012.

Dyfyniad MLA

Curtis, Carey, and Nicholas Low. Institutional Barriers to Sustainable Transport. Ashgate, 2012.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.