APA (7th ed.) Citation

Markham, U. (1993). How to deal with difficult people. [s.n].

Chicago Style (17th ed.) Citation

Markham, Ursula. How to Deal with Difficult People. ThorSonS, London: [s.n], 1993.

MLA (9th ed.) Citation

Markham, Ursula. How to Deal with Difficult People. [s.n], 1993.