Bolenius, E. M. (1929). Teachers' manual for fourth, fifth, and sixth grades (Revised edition.). Houghton Mifflin Company ; The Riverside Press.
Lua i Stíl Chicago (17ú heag.)Bolenius, Emma Miller. Teachers' Manual for Fourth, Fifth, and Sixth Grades. Revised edition. Boston ; New York ; Chicago ; Dallas ; San Francisco : Cambridge, Massachusetts: Houghton Mifflin Company ; The Riverside Press, 1929.
Lua MLA (8ú heag.)Bolenius, Emma Miller. Teachers' Manual for Fourth, Fifth, and Sixth Grades. Revised edition. Houghton Mifflin Company ; The Riverside Press, 1929.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.