Citazione Stile APA (7a Edizione)

Koen, B. V. (1985). Definition of the engineering method. American Society for Engineering Education.

Citazione stile Chigago Style (17a edizione)

Koen, Billy Vaughn. Definition of the Engineering Method. Washington, D.C: American Society for Engineering Education, 1985.

Citatione MLA (9a ed.)

Koen, Billy Vaughn. Definition of the Engineering Method. American Society for Engineering Education, 1985.