Cita APA (7th ed.)

Bohl, M. (1971). Flowcharting techniques. Science Research Associates.

Cita Chicago (17th ed.)

Bohl, Marilyn. Flowcharting Techniques. Chicago: Science Research Associates, 1971.

Cita MLA (9th ed.)

Bohl, Marilyn. Flowcharting Techniques. Science Research Associates, 1971.