Parker, R. G. (1845). Progressive exercises in English composition (45th stereotype ed.). Robert S. Davies.
Lua i Stíl Chicago (17ú heag.)Parker, Richard Green. Progressive Exercises in English Composition. 45th stereotype ed. Boston: Robert S. Davies, 1845.
Lua MLA (8ú heag.)Parker, Richard Green. Progressive Exercises in English Composition. 45th stereotype ed. Robert S. Davies, 1845.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.