Gates, A. I., & Peardon, M. C. (1944). Manual of directions, books III, IV, V and VI, types A, B, C, and D. Teachers College, Columbia University.
Lua i Stíl Chicago (17ú heag.)Gates, Arthur Irving, agus Mrs. Celeste Peardon. Manual of Directions, Books III, IV, V and VI, Types A, B, C, and D. New York City: Teachers College, Columbia University, 1944.
Lua MLA (9ú heag.)Gates, Arthur Irving, agus Mrs. Celeste Peardon. Manual of Directions, Books III, IV, V and VI, Types A, B, C, and D. Teachers College, Columbia University, 1944.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.