Pitchford, J. D. (1974). Population in economic growth. North-Holland Pub.
芝加哥风格引文Pitchford, J. D. Population in Economic Growth. Amsterdam: North-Holland Pub, 1974.
MLA引文Pitchford, J. D. Population in Economic Growth. North-Holland Pub, 1974.
警告：这些引文格式不一定是100％准确.