NUNN DANIEL. (2019). WHY LIVING THINGS NEED... FOOD (2012 Ed.). RAINTREE PUBLISHERS.
芝加哥风格引文NUNN DANIEL. WHY LIVING THINGS NEED... FOOD. 2012 Ed. CHICAGO: RAINTREE PUBLISHERS, 2019.
MLA引文NUNN DANIEL. WHY LIVING THINGS NEED... FOOD. 2012 Ed. RAINTREE PUBLISHERS, 2019.
警告：这些引文格式不一定是100％准确.