Cooper, D. R. S. (2006). Business research methods (9 edition.).
Citación estilo ChicagoCooper, Donald R; Schindler. Business Research Methods. 9 edition. Tata Mc Graw Hill: New Delhi, 2006.
Cita MLACooper, Donald R; Schindler. Business Research Methods. 9 edition. 2006.
Warning: These citations may not always be 100% accurate.