Não informado. (1979). European Applied Research Reports. Harwood Academic Publishers.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. European Applied Research Reports. Chur, Suíça: Harwood Academic Publishers, 1979.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. European Applied Research Reports. Harwood Academic Publishers, 1979.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.