Alden, D. W. (1948). Introduction to French masterpieces. Appleton-Century-Crofts.
Lua i Stíl Chicago (17ú heag.)Alden, Douglas William. Introduction to French Masterpieces. New York: Appleton-Century-Crofts, 1948.
Lua MLA (9ú heag.)Alden, Douglas William. Introduction to French Masterpieces. Appleton-Century-Crofts, 1948.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.