APA

Dunbar (Chas S), . (1969). "Buses, Trolleys & Trams". : .

Chicago

Dunbar (Chas S), . 1969. "Buses, Trolleys & Trams". : .

Harvard

Dunbar (Chas S), . (1969). "Buses, Trolleys & Trams". : .

MLA

Dunbar (Chas S), . "Buses, Trolleys & Trams". : . 1969.