Cita APA (7a ed.)

Fröhr, F. (1985). Electronic control engineering made easy: An introduction for beginners. Siemens Aktiengesellschaft.

Cita Chicago Style (17a ed.)

Fröhr, Friedrich. Electronic Control Engineering Made Easy: An Introduction for Beginners. Berlin: Siemens Aktiengesellschaft, 1985.

Cita MLA (8a ed.)

Fröhr, Friedrich. Electronic Control Engineering Made Easy: An Introduction for Beginners. Siemens Aktiengesellschaft, 1985.