Birk. Fostering on the Farm. University of Illinois Press.
芝加哥风格引文Birk. Fostering on the Farm. University of Illinois Press.
MLA引文Birk. Fostering on the Farm. University of Illinois Press.
警告：这些引文格式不一定是100％准确.
APA引文
Birk. Fostering on the Farm. University of Illinois Press.
芝加哥风格引文Birk. Fostering on the Farm. University of Illinois Press.
MLA引文Birk. Fostering on the Farm. University of Illinois Press.