Não informado. Selected bibliography of Yugoslav educational materials. Yugoslav Institute for Educational Research.
Citação do estilo Chicago (17ª ed.)Não informado. Selected Bibliography of Yugoslav Educational Materials. Belgrade: Yugoslav Institute for Educational Research.
Citação MLA (8ª ed.)Não informado. Selected Bibliography of Yugoslav Educational Materials. Yugoslav Institute for Educational Research.
Atenció: Aquestes cites poden no estar 100% correctes.