Havighurst, R. J. (1972). Development tasks and education (3rd ed.). David McKay Company, Inc..
Chicagoスタイル(17版)引用形式Havighurst, Robert James. Development Tasks and Education. 3rd ed. New york: David McKay Company, Inc., 1972.
MLA(8版)引用形式Havighurst, Robert James. Development Tasks and Education. 3rd ed. David McKay Company, Inc., 1972.
警告: この引用は必ずしも正確ではありません.