劳伦森 & 霍布斯. (2010). 头发一年要长15千米: Your hair grows 15 kilometres a year. 四川少年儿童出版社.
Dyfyniad Arddull Chicago劳伦森 and 霍布斯. 头发一年要长15千米: Your Hair Grows 15 Kilometres a Year. 四川少年儿童出版社, 2010.
Dyfyniad MLA劳伦森 and 霍布斯. 头发一年要长15千米: Your Hair Grows 15 Kilometres a Year. 四川少年儿童出版社, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.