步天歌. (2009). 爱你，如果可以早一秒: I love you，if only it could have been earlier. 中国妇女出版社.
Chicago (17e ed.) Bronvermelding步天歌. 爱你，如果可以早一秒: I Love You，if only It Could Have Been Earlier. 中国妇女出版社, 2009.
MLA (8e ed.) Bronvermelding步天歌. 爱你，如果可以早一秒: I Love You，if only It Could Have Been Earlier. 中国妇女出版社, 2009.
Let op: Deze citaties zijn niet altijd 100% accuraat.