Hopf, H. A., & Link, H. C. (1946). People and books: A study of reading and book-buying habits. Book Industry Committee, Book Manufacturers' Institute.
Citazione stile Chigago Style (17a edizione)Hopf, Harry Arthur, e Henry Charles Link. People and Books: A Study of Reading and Book-buying Habits. New York: Book Industry Committee, Book Manufacturers' Institute, 1946.
Citatione MLA (9a ed.)Hopf, Harry Arthur, e Henry Charles Link. People and Books: A Study of Reading and Book-buying Habits. Book Industry Committee, Book Manufacturers' Institute, 1946.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.