Cita APA (7a ed.)

Play Schools Association. (1949). How to make a play school work: A manual for teachers and group leaders. [s.n.].

Cita Chicago Style (17a ed.)

Play Schools Association. How to Make a Play School Work: A Manual for Teachers and Group Leaders. New York: [s.n.], 1949.

Cita MLA (9a ed.)

Play Schools Association. How to Make a Play School Work: A Manual for Teachers and Group Leaders. [s.n.], 1949.