Lillian Hayes Martin. (2009). The business devotional (1.). sterling.
Cita Chicago (17th ed.)Lillian Hayes Martin. The Business Devotional. 1. sterling, 2009.
Cita MLA (9th ed.)Lillian Hayes Martin. The Business Devotional. 1. sterling, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.