APA
Ricardo D., Kolthammer F. W., . (2004). The principles of political economy and taxation. Mineola, N.Y: Dover Publications.
Chicago
Ricardo David, Kolthammer F W, . 2004. The principles of political economy and taxation. Mineola, N.Y: Dover Publications.
Harvard
Ricardo D., Kolthammer F. W., . (2004). The principles of political economy and taxation. Mineola, N.Y: Dover Publications.
MLA
Ricardo David, Kolthammer F W, . The principles of political economy and taxation. Mineola, N.Y: Dover Publications. 2004.