APA

Brög W., Erl E. & Mötsch G. (1981). Use of urban public transportation for multiperson trips and the market chances of a family tariff. : Transportation research record.

Chicago

Brög W, Erl E and Mötsch G. 1981. Use of urban public transportation for multiperson trips and the market chances of a family tariff. : Transportation research record.

Harvard

Brög W., Erl E. and Mötsch G. (1981). Use of urban public transportation for multiperson trips and the market chances of a family tariff. : Transportation research record.

MLA

Brög W, Erl E and Mötsch G. Use of urban public transportation for multiperson trips and the market chances of a family tariff. : Transportation research record. 1981.