Soysonthi, S. (1967). A study of the organization and functions of parent-teacher associations in selected public secondary schools in Manila and Quezon City: Its implication to parent-teacher associations in Bangkok, Thailand. s.n.].

Soysonthi, Sermsook. A Study of the Organization and Functions of Parent-teacher Associations in Selected Public Secondary Schools in Manila and Quezon City: Its Implication to Parent-teacher Associations in Bangkok, Thailand. [Quezon City: s.n.], 1967.

Soysonthi, Sermsook. A Study of the Organization and Functions of Parent-teacher Associations in Selected Public Secondary Schools in Manila and Quezon City: Its Implication to Parent-teacher Associations in Bangkok, Thailand. s.n.], 1967.