APA (7th ed.) Citation

Grogan, D. J. (1968). Case studies in reference work (Reprinted.). Bingley.

Chicago Style (17th ed.) Citation

Grogan, Denis J. Case Studies in Reference Work. Reprinted. London: Bingley, 1968.

MLA (9th ed.) Citation

Grogan, Denis J. Case Studies in Reference Work. Reprinted. Bingley, 1968.