1.5 space, Font 11, 10-15 pages long. MLA, with footnotes.
Don’t address the problem from business perspective, you must talk about ethic and moral issues.
For example, you can compare and contrast the ethical leadership positions of Machiavelli, author of The Prince, and Robert Greenleaf, the author of Servant Leadership.
This is just an idea, you can write whatever you are interested in as long as it relates to the topic ethic leadership