APA

Huebner G. G., Kramer R. L., . (1942). Foreign trade. New York [u.a.]: Appleton-Century Comp.

Chicago

Huebner Grover G, Kramer Roland L, . 1942. Foreign trade. New York [u.a.]: Appleton-Century Comp.

Harvard

Huebner G. G., Kramer R. L., . (1942). Foreign trade. New York [u.a.]: Appleton-Century Comp.

MLA

Huebner Grover G, Kramer Roland L, . Foreign trade. New York [u.a.]: Appleton-Century Comp. 1942.