Citazione Stile APA (7a Edizione)

Langsrorf, . A. S. (1959). Principal of direct current machines (6th ed.). Mc Graw Hill.

Citazione stile Chigago Style (17a edizione)

Langsrorf, Alexander S. Principal of Direct Current Machines. 6th ed. New York: Mc Graw Hill, 1959.

Citatione MLA (9a ed.)

Langsrorf, Alexander S. Principal of Direct Current Machines. 6th ed. Mc Graw Hill, 1959.