APA
Hutchinson W., Margo Robert A & National Bureau Of Economic Research. (2004). The impact of the civil war on capital intensity and labor productivity in Southern manufacturing. Cambridge, MA: NBER.
Chicago
Hutchinson William, Margo Robert A and National Bureau Of Economic Research. 2004. The impact of the civil war on capital intensity and labor productivity in Southern manufacturing. Cambridge, MA: NBER.
Harvard
Hutchinson W., Margo Robert A and National Bureau Of Economic Research. (2004). The impact of the civil war on capital intensity and labor productivity in Southern manufacturing. Cambridge, MA: NBER.
MLA
Hutchinson William, Margo Robert A and National Bureau Of Economic Research. The impact of the civil war on capital intensity and labor productivity in Southern manufacturing. Cambridge, MA: NBER. 2004.