Παραπομπή APA

Collison,Robert L. (1969). Indexes and Indexing (3rd(1st-1959).). Ernest Benn Ltd.

Παραπομπή Chicago Style

Collison,Robert L. Indexes and Indexing. 3rd(1st-1959). London: Ernest Benn Ltd, 1969.

Παραπομπή MLA

Collison,Robert L. Indexes and Indexing. 3rd(1st-1959). Ernest Benn Ltd, 1969.