Citazione Stile APA (7a Edizione)

(1970). Guidelines for the Establishment of Statistics on Libraries, Book Production and Mass Media.

Citazione stile Chigago Style (17a edizione)

Guidelines for the Establishment of Statistics on Libraries, Book Production and Mass Media. 1970.

Citatione MLA (9a ed.)

Guidelines for the Establishment of Statistics on Libraries, Book Production and Mass Media. 1970.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.