The bibliography is to list the works that you have consulted in your research of the topic and explain why each will be useful in writing the paper. All topics must be cleared by me. Model your research paper on the essays in the Rich and Shipley, eds, War and Society in the Roman World . Since this is a research paper, your grade will reflect how well you reseached your topic. You may use all primary source accounts for you paper.
Scholarly books tend to be published by university presses.
I encourage you also to consult articles in scholarly journals. If you have questions, ask me. Read critically and evaluate what the sources that you use. Do not merely summarize the arguments and theses presented in these secondary works. Your footnotes should NOT be a series of references to a single work.