Giulio Maestro Marco Maestro. (1996). What Do You Hear When Cows Sing?
芝加哥风格引文Giulio Maestro Marco Maestro. What Do You Hear When Cows Sing? 1996.
MLA引文Giulio Maestro Marco Maestro. What Do You Hear When Cows Sing? 1996.
警告：这些引文格式不一定是100％准确.
APA引文