APA

SCHUMAN L. O., . (1960). Political history of the Yemen at the beginning of the 16th century. Amsterdam: Kleine.

Chicago

SCHUMAN Lein Oebele, . 1960. Political history of the Yemen at the beginning of the 16th century. Amsterdam: Kleine.

Harvard

SCHUMAN L. O., . (1960). Political history of the Yemen at the beginning of the 16th century. Amsterdam: Kleine.

MLA

SCHUMAN Lein Oebele, . Political history of the Yemen at the beginning of the 16th century. Amsterdam: Kleine. 1960.