APA (7th ed.) Citation

Garbutt, P. E. (1969). Underground, diagram of lines and station index: [London metropolitan area]. London Transport.

Chicago Style (17th ed.) Citation

Garbutt, Paul E. Underground, Diagram of Lines and Station Index: [London Metropolitan Area]. [London]: London Transport, 1969.

MLA (9th ed.) Citation

Garbutt, Paul E. Underground, Diagram of Lines and Station Index: [London Metropolitan Area]. London Transport, 1969.