APA (7th ed.) Citation

Cohen, D. E. (1978). Combinatorial group theory: A topological approach. Dept. of Pure Mathematics, Queen Mary College, University of London.

Chicago Style (17th ed.) Citation

Cohen, Daniel E. Combinatorial Group Theory: A Topological Approach. London: Dept. of Pure Mathematics, Queen Mary College, University of London, 1978.

MLA (9th ed.) Citation

Cohen, Daniel E. Combinatorial Group Theory: A Topological Approach. Dept. of Pure Mathematics, Queen Mary College, University of London, 1978.