APA

Lucas N. J., McInnis K. J. & Library of Congress. (2017). The 2015 National Security Strategy: Authorities, Changes, Issues for Congress. [Washington, D.C.]: Congressional Research Service.

Chicago

Lucas Nathan J, McInnis Kathleen J and Library of Congress. 2017. The 2015 National Security Strategy: Authorities, Changes, Issues for Congress. [Washington, D.C.]: Congressional Research Service.

Harvard

Lucas N. J., McInnis K. J. and Library of Congress. (2017). The 2015 National Security Strategy: Authorities, Changes, Issues for Congress. [Washington, D.C.]: Congressional Research Service.

MLA

Lucas Nathan J, McInnis Kathleen J and Library of Congress. The 2015 National Security Strategy: Authorities, Changes, Issues for Congress. [Washington, D.C.]: Congressional Research Service. 2017.