Porter, R. P. (1884). Protection and free trade to-day: At home and abroad, in field and workshop. J.R. Osgood.
Chicago-Zitierstil (17. Ausg.)Porter, Robert Percival. Protection and Free Trade To-day: At Home and Abroad, in Field and Workshop. Boston: J.R. Osgood, 1884.
MLA-Zitierstil (9. Ausg.)Porter, Robert Percival. Protection and Free Trade To-day: At Home and Abroad, in Field and Workshop. J.R. Osgood, 1884.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.