Paul, H. G., Kincheloe, I. M., & Ramsey, J. W. (1940). Junior units in English. Lyons & Carnahan.
Lua i Stíl Chicago (17ú heag.)Paul, H. G., Isabel Mary Kincheloe, agus James William Ramsey. Junior Units in English. Chicago: Lyons & Carnahan, 1940.
Lua MLA (8ú heag.)Paul, H. G., et al. Junior Units in English. Lyons & Carnahan, 1940.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.