Hjelmström, S., & Whyte, H. (1968). Say what you mean: Book one (1a. ed.). Longmans.
Lua i Stíl Chicago (17ú heag.)Hjelmström, Svante, agus Henry Whyte. Say What You Mean: Book One. 1a. ed. Londres: Longmans, 1968.
Lua MLA (9ú heag.)Hjelmström, Svante, agus Henry Whyte. Say What You Mean: Book One. 1a. ed. Longmans, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.