APA (7th ed.) Citation

Needes, R. (1994). You don't have to feel unwell! Gateway Books.

Chicago Style (17th ed.) Citation

Needes, Robin. You Don't Have to Feel Unwell! London: Gateway Books, 1994.

MLA (9th ed.) Citation

Needes, Robin. You Don't Have to Feel Unwell! Gateway Books, 1994.