Tan, K. Forms as a symptom of business health. SISIR Industrial Technical Information Service.
Cita Chicago (17th ed.)Tan, K.S. Forms as a Symptom of Business Health. Singapore: SISIR Industrial Technical Information Service.
Cita MLA (9th ed.)Tan, K.S. Forms as a Symptom of Business Health. SISIR Industrial Technical Information Service.
Atenció: Aquestes cites poden no estar 100% correctes.