普雷格尔 & 鲁比. (2016). 永远在一起: You're gone but you're still here. 北京少年儿童出版社.
Chicago Style (17th ed.) Citation普雷格尔 and 鲁比. 永远在一起: You're Gone but You're Still Here. 北京少年儿童出版社, 2016.
MLA (8th ed.) Citation普雷格尔 and 鲁比. 永远在一起: You're Gone but You're Still Here. 北京少年儿童出版社, 2016.
Warning: These citations may not always be 100% accurate.