APA

Kraus R. G., . (1957). Play activities for boys and girls, six through twelve: a guide for teachers, parents, and recreation leaders. New York: McGraw-Hill.

Chicago

Kraus Richard G, . 1957. Play activities for boys and girls, six through twelve: a guide for teachers, parents, and recreation leaders. New York: McGraw-Hill.

Harvard

Kraus R. G., . (1957). Play activities for boys and girls, six through twelve: a guide for teachers, parents, and recreation leaders. New York: McGraw-Hill.

MLA

Kraus Richard G, . Play activities for boys and girls, six through twelve: a guide for teachers, parents, and recreation leaders. New York: McGraw-Hill. 1957.