Cita APA (7a ed.)

Baird, S. W. (1900). Graded work in arithmetic. Fifth book, numbers from 1 to 20. American Book Co.

Cita Chicago Style (17a ed.)

Baird, S. W. Graded Work in Arithmetic. Fifth Book, Numbers from 1 to 20. Nuew York-Cincinnati- Chicago: American Book Co, 1900.

Cita MLA (9a ed.)

Baird, S. W. Graded Work in Arithmetic. Fifth Book, Numbers from 1 to 20. American Book Co, 1900.