(1991). Blue Sky Below My Feet: Daycamp & After School Programs 9 to 11 Year Olds. Leader's Manual. [microform].
芝加哥风格引文Blue Sky Below My Feet: Daycamp & After School Programs 9 to 11 Year Olds. Leader's Manual. [microform]. 1991.
MLA引文Blue Sky Below My Feet: Daycamp & After School Programs 9 to 11 Year Olds. Leader's Manual. [microform]. 1991.
警告：这些引文格式不一定是100％准确.