Pennsylvania school laws ... digest of the school code of 1911 ...

MLA

Campbell's Annotated Current Service. Pennsylvania school laws ... digest of the school code of 1911 ... [Place of publication not identified] : [publisher not identified], 1925-1935.

APA

Campbell's Annotated Current Service. (1925). Pennsylvania school laws ... digest of the school code of 1911 ... [Place of publication not identified] : [publisher not identified].

Chicago

Campbell's Annotated Current Service. Pennsylvania school laws ... digest of the school code of 1911 ... [Place of publication not identified] : [publisher not identified], 1925-1935.