Wiegand, W. A. (1979). Herbert Putnam's Appointment as Librarian of Congress.
Citazione stile Chigago Style (17a edizione)Wiegand, Wayne A. Herbert Putnam's Appointment as Librarian of Congress. 1979.
Citatione MLA (9a ed.)Wiegand, Wayne A. Herbert Putnam's Appointment as Librarian of Congress. 1979.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.