Petrullo, V. (1947). Puerto Rican paradox. University of Pennsylvania Press.
Chicagoスタイル(17版)引用形式Petrullo, Vincenzo. Puerto Rican Paradox. Philadelphia: University of Pennsylvania Press, 1947.
MLA(9版)引用形式Petrullo, Vincenzo. Puerto Rican Paradox. University of Pennsylvania Press, 1947.
警告: この引用は必ずしも正確ではありません.