Hafner, A. W. (1998). Descriptive Statistical Techniques for Librarians. 2nd Edition.
Citazione stile Chigago Style (17a edizione)Hafner, Arthur W. Descriptive Statistical Techniques for Librarians. 2nd Edition. 1998.
Citatione MLA (9a ed.)Hafner, Arthur W. Descriptive Statistical Techniques for Librarians. 2nd Edition. 1998.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.