Gaya APA

Orbell, J, &, D, R, &, K, A, V, D. (1990). The limits of multilateral promising. . : .

Gaya MLA

Orbell, John, &, Dawes,, Robyn, &, Kragt,, Alphons, Van, De. "The limits of multilateral promising. ". : , 1990. Majalah.