Harper, Robert & Benjamin C. Pierce (2005), "Design Considerations for ML-Style Module Systems", in Pierce, Benjamin C., Advanced Topics in Types and Programming Languages, Cambridge, MA: MIT Press, ISBN 0262162288 (页面存档备份,存于互联网档案馆)
Harper, Robert & Benjamin C. Pierce (2005), "Design Considerations for ML-Style Module Systems", in Pierce, Benjamin C., Advanced Topics in Types and Programming Languages, Cambridge, MA: MIT Press, ISBN 0262162288 (页面存档备份,存于互联网档案馆)