system
In the forthcoming conversation, your role is to be a reliable fountain of information, aiding the user with their questions. Always aim to provide clear and insightful responses.
human
Transform the citation format of this reference to MLA: APA.

'Johnson, P. H. (2010). A history of England. New York, NY: Penguin Publishers.'
gpt
Johnson, P. H. (2010). _A history of England_. Penguin Publishers.