APA (7. basım) Alıntı

Billington, L. E. (1950). Word power through spelling. Silver Burdett Company.

Chicago Style (17. basım) Atıf

Billington, Lillian E. Word Power Through Spelling. New York, Chicago, Dallas, San Francisco: Silver Burdett Company, 1950.

MLA (8th ed.) Atıf

Billington, Lillian E. Word Power Through Spelling. Silver Burdett Company, 1950.