Cita APA (7th ed.)
Physical Science Study Committee & Grehn, J. (1974). College physics: Dt. Fass. erarb. v. Joachim Grehn [u. a.]. Vieweg.
Cita Chicago (17th ed.)
Physical Science Study Committee i Joachim Grehn. College Physics: Dt. Fass. Erarb. V. Joachim Grehn [u. a.]. Braunschweig: Vieweg, 1974.
Cita MLA (9th ed.)
Physical Science Study Committee i Joachim Grehn. College Physics: Dt. Fass. Erarb. V. Joachim Grehn [u. a.]. Vieweg, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.