APA (7th ed.) Citation

Grogan, D. (1987). Grogan's case studies in reference work: V.1, enquiries and the reference process. Clive Bingley.

Chicago Style (17th ed.) Citation

Grogan, Dennis. Grogan's Case Studies in Reference Work: V.1, Enquiries and the Reference Process. London: Clive Bingley, 1987.

MLA (9th ed.) Citation

Grogan, Dennis. Grogan's Case Studies in Reference Work: V.1, Enquiries and the Reference Process. Clive Bingley, 1987.