Fawcett, J., & Downs, F. S. (1994). The relationship of theory and research (Second edition.). Info Access & Distribution.
Lua i Stíl Chicago (17ú heag.)Fawcett, Jacqueline, agus Florence S. Downs. The Relationship of Theory and Research. Second edition. Singapore: Info Access & Distribution, 1994.
Lua MLA (9ú heag.)Fawcett, Jacqueline, agus Florence S. Downs. The Relationship of Theory and Research. Second edition. Info Access & Distribution, 1994.
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