Παραπομπή APA

Vickery, B. C. (1975). Classification and indexing in science (3rd. ed.). Butterworths.

Παραπομπή Chicago Style

Vickery, B. C. Classification and Indexing in Science. 3rd. ed. London: Butterworths, 1975.

Παραπομπή MLA

Vickery, B. C. Classification and Indexing in Science. 3rd. ed. Butterworths, 1975.