Englebretsen, G. (2012). Robust reality: An essay in formal ontology. Ontos Verlag.
芝加哥风格引文Englebretsen, George. Robust Reality: An Essay in Formal Ontology. Frankfurt: Ontos Verlag, 2012.
MLA引文Englebretsen, George. Robust Reality: An Essay in Formal Ontology. Ontos Verlag, 2012.
警告：这些引文格式不一定是100％准确.