APA

Frumkin G., . (1951). Population changes in Europe since 1939: a study of population changes in Europe during and since World War II as shown by the balance sheets of twenty-four European countries. New York: A.M. Kelley.

Chicago

Frumkin Grzegorz, . 1951. Population changes in Europe since 1939: a study of population changes in Europe during and since World War II as shown by the balance sheets of twenty-four European countries. New York: A.M. Kelley.

Harvard

Frumkin G., . (1951). Population changes in Europe since 1939: a study of population changes in Europe during and since World War II as shown by the balance sheets of twenty-four European countries. New York: A.M. Kelley.

MLA

Frumkin Grzegorz, . Population changes in Europe since 1939: a study of population changes in Europe during and since World War II as shown by the balance sheets of twenty-four European countries. New York: A.M. Kelley. 1951.