APA
Lichtheim G., . (1972). Europe In The 20th Century. London: Phoenix Press.
Chicago
Lichtheim George, . 1972. Europe In The 20th Century. London: Phoenix Press.
Harvard
Lichtheim G., . (1972). Europe In The 20th Century. London: Phoenix Press.
MLA
Lichtheim George, . Europe In The 20th Century. London: Phoenix Press. 1972.
