Crockett, S. (1961). Frankfurter's red record: By Sam Crockett. Christian Educational Association.
Lua i Stíl Chicago (17ú heag.)Crockett, Sam. Frankfurter's Red Record: By Sam Crockett. Union, N.J.: Christian Educational Association, 1961.
Lua MLA (8ú heag.)Crockett, Sam. Frankfurter's Red Record: By Sam Crockett. Christian Educational Association, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.