APA (7e ed.) Bronvermelding

Heß, M. R. Observatories: Michael Reinhard Hess Censorship : a World encyclopedia, Vol. 3, L - R / Ed.: Derek Jones. London [u.a.], 2001.

Chicago (17e ed.) Bronvermelding

Heß, Michael Reinhard. "Observatories: Michael Reinhard Hess." Censorship : A World Encyclopedia, Vol. 3, L - R / Ed.: Derek Jones. London [u.a.], 2001 .

MLA (8e ed.) Bronvermelding

Heß, Michael Reinhard. "Observatories: Michael Reinhard Hess." Censorship : A World Encyclopedia, Vol. 3, L - R / Ed.: Derek Jones. London [u.a.], 2001, .