Cita APA (7a ed.)

Rose, A. K. (1991). Why has trade grown faster than income? [s.n.].

Cita Chicago Style (17a ed.)

Rose, Andrew K. Why Has Trade Grown Faster than Income? [S.l.]: [s.n.], 1991.

Cita MLA (9a ed.)

Rose, Andrew K. Why Has Trade Grown Faster than Income? [s.n.], 1991.