Salvador, M. R. (2012). Measuring the efficiency of selected travel agencies in Metro Manila: A frontier approach [thesis abstract]. Ad Veritatem.
Citazione stile Chigago Style (17a edizione)Salvador, Magnolia Rafael. "Measuring the Efficiency of Selected Travel Agencies in Metro Manila: A Frontier Approach [thesis Abstract]." Ad Veritatem 2012.
Citatione MLA (9a ed.)Salvador, Magnolia Rafael. "Measuring the Efficiency of Selected Travel Agencies in Metro Manila: A Frontier Approach [thesis Abstract]." Ad Veritatem, 2012.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.