Cita APA (7a ed.)

Strickland, R. G. (1938). A study of the possibilities of graphs as a means of instruction in the first four grades of the elementary school. Columbia University.

Cita Chicago Style (17a ed.)

Strickland, Ruth Gertrude. A Study of the Possibilities of Graphs as a Means of Instruction in the First Four Grades of the Elementary School. New York: Columbia University, 1938.

Cita MLA (9a ed.)

Strickland, Ruth Gertrude. A Study of the Possibilities of Graphs as a Means of Instruction in the First Four Grades of the Elementary School. Columbia University, 1938.