APA

European Free Trade Association, . (1972). The European Free Trade Association. Geneva: EFTA Secretariat.

Chicago

European Free Trade Association, . 1972. The European Free Trade Association. Geneva: EFTA Secretariat.

Harvard

European Free Trade Association, . (1972). The European Free Trade Association. Geneva: EFTA Secretariat.

MLA

European Free Trade Association, . The European Free Trade Association. Geneva: EFTA Secretariat. 1972.