Washburn, R. M. (1924). Calvin Coolidge: His first biography ; a brief biography of Calvin Coolidge ; from cornerstone to capstone (The ABC ed.). Roosevelt Club.
Chicago-Zitierstil (17. Ausg.)Washburn, Robert Morris. Calvin Coolidge: His First Biography ; a Brief Biography of Calvin Coolidge ; from Cornerstone to Capstone. The ABC ed. Boston: Roosevelt Club, 1924.
MLA-Zitierstil (9. Ausg.)Washburn, Robert Morris. Calvin Coolidge: His First Biography ; a Brief Biography of Calvin Coolidge ; from Cornerstone to Capstone. The ABC ed. Roosevelt Club, 1924.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.