APA

,, . (1978). Some possible lines of development of an overall structure for a European unit/credit scheme for foreign language learning by adults. Strasbourg: Council of Europe.

Chicago

,, . 1978. Some possible lines of development of an overall structure for a European unit/credit scheme for foreign language learning by adults. Strasbourg: Council of Europe.

Harvard

,, . (1978). Some possible lines of development of an overall structure for a European unit/credit scheme for foreign language learning by adults. Strasbourg: Council of Europe.

MLA

,, . Some possible lines of development of an overall structure for a European unit/credit scheme for foreign language learning by adults. Strasbourg: Council of Europe. 1978.