APA

Liers E. E., Sherin R., . (1957). A beaver's story. New York: Viking Press.

Chicago

Liers Emil Ernest, Sherin Ray, . 1957. A beaver's story. New York: Viking Press.

Harvard

Liers E. E., Sherin R., . (1957). A beaver's story. New York: Viking Press.

MLA

Liers Emil Ernest, Sherin Ray, . A beaver's story. New York: Viking Press. 1957.