APA (7th ed.) Citation

London Transport Board & Garbutt, P. E. (1971). Underground: Diagram of lines and station index. Johnson, Riddle & Co. Ltd..

Chicago Style (17th ed.) Citation

London Transport Board and Paul E. Garbutt. Underground: Diagram of Lines and Station Index. London: Johnson, Riddle & Co. Ltd., 1971.

MLA (9th ed.) Citation

London Transport Board and Paul E. Garbutt. Underground: Diagram of Lines and Station Index. Johnson, Riddle & Co. Ltd., 1971.