APA (7th ed.) Citation

Janner, G. (1970). The businessman's guide to letter-writing and to the law on letters. Business Books.

Chicago Style (17th ed.) Citation

Janner, Greville. The Businessman's Guide to Letter-writing and to the Law on Letters. London: Business Books, 1970.

MLA (9th ed.) Citation

Janner, Greville. The Businessman's Guide to Letter-writing and to the Law on Letters. Business Books, 1970.

Warning: These citations may not always be 100% accurate.