Martin, G. (1968). General metaphysics: Its problems and its method. George Allen & Unwin.
استشهاد بنمط شيكاغوMartin, Gottfried. General Metaphysics: Its Problems and Its Method. London: George Allen & Unwin, 1968.
MLA استشهادMartin, Gottfried. General Metaphysics: Its Problems and Its Method. George Allen & Unwin, 1968.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.