Cita APA (7th ed.)

Education Development Center. Educational Services Incorporated. (1967). Introductory physical science. United Publishing.

Cita Chicago (17th ed.)

Education Development Center. Educational Services Incorporated. Introductory Physical Science. Manila: United Publishing, 1967.

Cita MLA (9th ed.)

Education Development Center. Educational Services Incorporated. Introductory Physical Science. United Publishing, 1967.