Ritchie, A. C. O. M. (1857). Twin roses: A narrative. Ticknor and Fields.
Lua i Stíl Chicago (17ú heag.)Ritchie, Anna Cora Ogden Mowatt. Twin Roses: A Narrative. Boston: Ticknor and Fields, 1857.
Lua MLA (8ú heag.)Ritchie, Anna Cora Ogden Mowatt. Twin Roses: A Narrative. Ticknor and Fields, 1857.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.