Cita APA (7a ed.)

Roeper, R., & Friedrich, M. (1985). Short-circuit currents in three-phase systems (2a. ed.). Siemens Aktiengesellschaft: Wiley.

Cita Chicago Style (17a ed.)

Roeper, Richar, y Mitlehner Friedrich. Short-circuit Currents in Three-phase Systems. 2a. ed. Berlín: Siemens Aktiengesellschaft: Wiley, 1985.

Cita MLA (9a ed.)

Roeper, Richar, y Mitlehner Friedrich. Short-circuit Currents in Three-phase Systems. 2a. ed. Siemens Aktiengesellschaft: Wiley, 1985.