Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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