Citazione Stile APA (7a Edizione)

Baird, S. W. (1899). Graded work in arithmetic. Fifth book, grammar grades. American Book Co.

Citazione stile Chigago Style (17a edizione)

Baird, S. W. Graded Work in Arithmetic. Fifth Book, Grammar Grades. Nueva York- cincinnati: American Book Co, 1899.

Citatione MLA (9a ed.)

Baird, S. W. Graded Work in Arithmetic. Fifth Book, Grammar Grades. American Book Co, 1899.