APA aipamena

Lee, R. M. (2000). Unobtrusive methods in social research. Open University Press.

Chicago Style aipamena

Lee, Raymond M. Unobtrusive Methods in Social Research. Buckingham [England]: Open University Press, 2000.

MLA aipamena

Lee, Raymond M. Unobtrusive Methods in Social Research. Open University Press, 2000.