APA (7th ed.) Citation

Heller. (1962). The Berlin Wall. Frederick Muller Ltd.

Chicago Style (17th ed.) Citation

Heller. The Berlin Wall. London: Frederick Muller Ltd, 1962.

MLA (9th ed.) Citation

Heller. The Berlin Wall. Frederick Muller Ltd, 1962.

Warning: These citations may not always be 100% accurate.