(1995). A First-Grade Math Lesson with David Burchfield. School Development Library. [Multimedia.].
Citazione stile Chigago Style (17a edizione)A First-Grade Math Lesson with David Burchfield. School Development Library. [Multimedia.]. 1995.
Citatione MLA (9a ed.)A First-Grade Math Lesson with David Burchfield. School Development Library. [Multimedia.]. 1995.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.