Cita APA (7th ed.)

Williams, A. R. Billions of books: Albert Rhys Williams. The writer in a changing world.(1937).

Cita Chicago (17th ed.)

Williams, Albert Rhys. "Billions of Books: Albert Rhys Williams." The Writer in a Changing World.(1937) .

Cita MLA (8th ed.)

Williams, Albert Rhys. "Billions of Books: Albert Rhys Williams." The Writer in a Changing World.(1937), .