Cartwright, W. H. (1950). The teaching of history in the United States (a. ed.). Instituto Panamericano de Geografía e Historia.
Cita Chicago Style (17a ed.)Cartwright, William H. The Teaching of History in the United States. a. ed. México: Instituto Panamericano de Geografía e Historia, 1950.
Cita MLA (9a ed.)Cartwright, William H. The Teaching of History in the United States. a. ed. Instituto Panamericano de Geografía e Historia, 1950.
警告：这些引文格式不一定是100％准确.