Elizabeth J Wilkins. (1979). Elements of social science (Ed.2.).
Chicago Style aipamenaElizabeth J Wilkins. Elements of Social Science. Ed.2. Plymouth, Macdonald and Evans, 1979.
MLA aipamenaElizabeth J Wilkins. Elements of Social Science. Ed.2. 1979.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.