Παραπομπή APA

Wolfe, R. I. (1961). Annotated bibliography of the geography of transportation. [s.l.]: [s.n.].

Παραπομπή Chicago Style

Wolfe, Roy I. Annotated Bibliography of the Geography of Transportation. [s.l.]: [s.n.], 1961.

Παραπομπή MLA

Wolfe, Roy I. Annotated Bibliography of the Geography of Transportation. [s.l.]: [s.n.], 1961.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.