Citazione Stile APA (7a Edizione)

ELONKA, S. M. (1985). Standar boiler room: Questions and answers. Tata McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

ELONKA, Stephen M. Standar Boiler Room: Questions and Answers. New Delhi: Tata McGraw-Hill, 1985.

Citatione MLA (9a ed.)

ELONKA, Stephen M. Standar Boiler Room: Questions and Answers. Tata McGraw-Hill, 1985.