APA

Blank L. T., .Engineering Economy. New York :Mcgraw hill ,2012: .

Chicago

Blank Leland/anthony Tarquin, .Engineering Economy. New York :Mcgraw hill ,2012: .

Harvard

Blank L. T., .Engineering Economy. New York :Mcgraw hill ,2012: .

MLA

Blank Leland/anthony Tarquin, .New York :Mcgraw hill ,2012: . .