Essay Topic: Nursing Theorist

Hello, I have an essay due on December 5th. The essay must be about one nursing theorist, what their concepts are and how I would apply/use their concept in practice.The essay has to be in APA format(7th edition), double-spaced, font:times new roman, 12 pt, 4-6 pages (including title and reference page), and there has to be in-text citation.