3 years ISUY 1946-1949.

MLA

Molenaar, Bob. 3 Years Isuy 1946-1949. Amsterdam: ISUY, 1949.

APA

Molenaar, B. (1949). 3 years ISUY 1946-1949. Amsterdam: ISUY.

Chicago

Molenaar, Bob 3 Years ISUY 1946-1949. Amsterdam: ISUY, 1949.