库珀 & 杨玲玲. (2015). 宝宝不想睡: Baby who wouldn't go to bed. 北京联合出版公司.
Chicago-стиль цитирования库珀 and 杨玲玲. 宝宝不想睡: Baby Who Wouldn't Go to Bed. 北京联合出版公司, 2015.
MLA-цитирование库珀 and 杨玲玲. 宝宝不想睡: Baby Who Wouldn't Go to Bed. 北京联合出版公司, 2015.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.