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.
Stile di citazione Chicago普雷格尔 e 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.
Citazione MLA普雷格尔 e 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.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.