Lyman, R. L. V. (1924). The mind at work in studying, thinking, and reading: A source book and discussion manual. Scott, Foresman and Company.
Lua i Stíl Chicago (17ú heag.)Lyman, Rollo La Verne. The Mind at Work in Studying, Thinking, and Reading: A Source Book and Discussion Manual. Chicago, Atlanta [etc.]: Scott, Foresman and Company, 1924.
Lua MLA (8ú heag.)Lyman, Rollo La Verne. The Mind at Work in Studying, Thinking, and Reading: A Source Book and Discussion Manual. Scott, Foresman and Company, 1924.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.