叶芝 & 睡前读诗编译组. 当你老了. 北京时代华文书局.
Chicago Style (17th ed.) Citation叶芝 and 睡前读诗编译组. 当你老了. 北京时代华文书局.
MLA (8th ed.) Citation叶芝 and 睡前读诗编译组. 当你老了. 北京时代华文书局.
Warning: These citations may not always be 100% accurate.
APA (7th ed.) Citation