APA استشهاد

Lieber, L. R., & Lieber, H. G. (1945). Einstein theory of relativity. Dennis Dobson.

استشهاد بنمط شيكاغو

Lieber, Lillian R., و Hugh Gray Lieber. Einstein Theory of Relativity. New York, Toronto: Dennis Dobson, 1945.

MLA استشهاد

Lieber, Lillian R., و Hugh Gray Lieber. Einstein Theory of Relativity. Dennis Dobson, 1945.