APA

Kretschmer H. L., . (1938). Multiple primary cancers. [S.l: s.n.

Chicago

Kretschmer Herman L, . 1938. Multiple primary cancers. [S.l: s.n.

Harvard

Kretschmer H. L., . (1938). Multiple primary cancers. [S.l: s.n.

MLA

Kretschmer Herman L, . Multiple primary cancers. [S.l: s.n. 1938.