APA (7th ed.) Citation

Acker, H. (1948). Four sons of Norway. New York, Nelson.

Chicago Style (17th ed.) Citation

Acker, Helen. Four Sons of Norway. New York, Nelson, 1948.

MLA (9th ed.) Citation

Acker, Helen. Four Sons of Norway. New York, Nelson, 1948.

Warning: These citations may not always be 100% accurate.