Cita APA (7a ed.)

Eddy, H. M. (1933). Instruction in Foreign Languages. United States Department of the Interior Office of Education.

Cita Chicago Style (17a ed.)

Eddy, Helen M. Instruction in Foreign Languages. Washington: United States Department of the Interior Office of Education, 1933.

Cita MLA (9a ed.)

Eddy, Helen M. Instruction in Foreign Languages. United States Department of the Interior Office of Education, 1933.