Clark, F. (1949). Reading technique: Designed to make reading easy and pleasant. Clayton F. Summy.
Citazione stile Chigago Style (17a edizione)Clark, Frances. Reading Technique: Designed to Make Reading Easy and Pleasant. Chicago: Clayton F. Summy, 1949.
Citatione MLA (9a ed.)Clark, Frances. Reading Technique: Designed to Make Reading Easy and Pleasant. Clayton F. Summy, 1949.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.