APA

,, . (1991). European convention on the general equivalence of periods of university study : No 138. Strasbourg: Council of Europe.

Chicago

,, . 1991. European convention on the general equivalence of periods of university study : No 138. Strasbourg: Council of Europe.

Harvard

,, . (1991). European convention on the general equivalence of periods of university study : No 138. Strasbourg: Council of Europe.

MLA

,, . European convention on the general equivalence of periods of university study : No 138. Strasbourg: Council of Europe. 1991.