APA
Lettau M., National Bureau of Economic Research & Madhavan A. (2018). Exchange traded funds 101 for economists. Cambridge: NBER.
Chicago
Lettau Martin, National Bureau of Economic Research and Madhavan Ananth. 2018. Exchange traded funds 101 for economists. Cambridge: NBER.
Harvard
Lettau M., National Bureau of Economic Research and Madhavan A. (2018). Exchange traded funds 101 for economists. Cambridge: NBER.
MLA
Lettau Martin, National Bureau of Economic Research and Madhavan Ananth. Exchange traded funds 101 for economists. Cambridge: NBER. 2018.