Philippine Institute of Industrial Engineers, PIIE National Congress, & IE Research Conference. (2012). The 12th PIIE National Congress + 5th IE Research Conference: Productivity & quality in pursuit of operational excellence. PIIE.
Chicago-referens (17:e uppl.)Philippine Institute of Industrial Engineers, PIIE National Congress, och IE Research Conference. The 12th PIIE National Congress + 5th IE Research Conference: Productivity & Quality in Pursuit of Operational Excellence. Makati City: PIIE, 2012.
MLA-referens (9:e uppl.)Philippine Institute of Industrial Engineers, et al. The 12th PIIE National Congress + 5th IE Research Conference: Productivity & Quality in Pursuit of Operational Excellence. PIIE, 2012.
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