A castle in the air

MLA

Ewing, Hugh. A castle in the air. [Place of publication not identified] : Research Publications, [date of publication not identified]

APA

Ewing, H. (0). A castle in the air. [Place of publication not identified] : Research Publications.

Chicago

Ewing, Hugh. A castle in the air. [Place of publication not identified] : Research Publications, [date of publication not identified]