Cita APA (7a ed.)

(2007). Bloomsbury Business Library - U.S. Business Quotations. A & C Black Publishers Ltd.

Cita Chicago Style (17a ed.)

Bloomsbury Business Library - U.S. Business Quotations. A & C Black Publishers Ltd, 2007.

Cita MLA (8a ed.)

Bloomsbury Business Library - U.S. Business Quotations. A & C Black Publishers Ltd, 2007.

Precaución: Estas citas no son 100% exactas.