Perry, B. (1920). A study of poetry. Houghton Mifflin Company.
Lua i Stíl Chicago (17ú heag.)Perry, Bliss. A Study of Poetry. Boston: Houghton Mifflin Company, 1920.
Lua MLA (9ú heag.)Perry, Bliss. A Study of Poetry. Houghton Mifflin Company, 1920.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.