Citazione Stile APA (7a Edizione)

Helm, G., & Deltete, R. J. (2000). The historical development of energetics. Kluwer Academic Publishers.

Citazione stile Chigago Style (17a edizione)

Helm, Georg, e Robert John Deltete. The Historical Development of Energetics. Dordrecht [etc.]: Kluwer Academic Publishers, 2000.

Citatione MLA (9a ed.)

Helm, Georg, e Robert John Deltete. The Historical Development of Energetics. Kluwer Academic Publishers, 2000.