Cita APA (7a ed.)

Koestler, A. (1954). The invisible writing: Being the second volume of Arrow in the blue an autobiography. MacMillan Company.

Cita Chicago Style (17a ed.)

Koestler, Arthur. The Invisible Writing: Being the Second Volume of Arrow in the Blue an Autobiography. New York: MacMillan Company, 1954.

Cita MLA (9a ed.)

Koestler, Arthur. The Invisible Writing: Being the Second Volume of Arrow in the Blue an Autobiography. MacMillan Company, 1954.