Παραπομπή APA

Cole, G. (1944). Centuary of co-operation. George allen & unwin ltd.

Παραπομπή Chicago Style

Cole, G.D.H. Centuary of Co-operation. New Delhi: George allen & unwin ltd, 1944.

Παραπομπή MLA

Cole, G.D.H. Centuary of Co-operation. George allen & unwin ltd, 1944.