Xerox University Microfilms\nUniversity Microfilms\nUniversity Microfilms International. (1966). Dissertation Abstracts International. University Microfilms International.
Citação do estilo Chicago (17ª ed.)Xerox University Microfilms\nUniversity Microfilms\nUniversity Microfilms International. Dissertation Abstracts International. Ann Arbor, Mich: University Microfilms International, 1966.
Citação MLA (8ª ed.)Xerox University Microfilms\nUniversity Microfilms\nUniversity Microfilms International. Dissertation Abstracts International. University Microfilms International, 1966.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.