Ward, R. P., & Stanley, H. E. J. S. (1875). A treatise of the relative rights and duties of belligerent and neutral powers in maritime affairs: In which the principles of armed neutralities and the opinions of Hubner and Schlegel are fully discussed. Diplomatic Review Office.

Ward, R. Plumer, and Henry Edward John Stanley Stanley. A Treatise of the Relative Rights and Duties of Belligerent and Neutral Powers in Maritime Affairs: In Which the Principles of Armed Neutralities and the Opinions of Hubner and Schlegel Are Fully Discussed. Diplomatic Review Office, 1875.