APA

Hader B., Hader E., . (1967). The big snow. New York: Macmillan Co.

Chicago

Hader Berta, Hader Elmer, . 1967. The big snow. New York: Macmillan Co.

Harvard

Hader B., Hader E., . (1967). The big snow. New York: Macmillan Co.

MLA

Hader Berta, Hader Elmer, . The big snow. New York: Macmillan Co. 1967.