Direct costs

اطلع عليه بتاريخ 2013-10-01. John، Mark. "Analysis: Low French borrowing costs risk negative reappraisal". Reuters. مؤرشف من الأصل في 2015-09-24. اطلع

واي باك مشين. "Human costs of war: Direct war death in Afghanistan, Iraq and Pakistan October 2001 – February 2013" (PDF). Costs of War. فبراير 2013.

to electric vehicles with lower sticker prices than gas cars – battery costs explained". The Conversation (بالإنجليزية). Archived from the original on

National Research Council (US) Committee on Drug Use in Food Animals (1999). "Costs of Eliminating Subtherapeutic Use of Antibiotics". The Use of Drugs in Food

INSTAT: Labour Force, 3rd Quarter 2013". مؤرشف من الأصل في 2014-03-11. Labour Costs And Regulations (PDF)، Albanian Investment Development Agency، مؤرشف من