(1962). Recent developments in general relativity: Dedicated to Leopold Infeld in connection with his 60th birthday. PSP..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Recent Developments in General Relativity: Dedicated to Leopold Infeld in Connection with His 60th Birthday. Warszawa: PSP., 1962.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Recent Developments in General Relativity: Dedicated to Leopold Infeld in Connection with His 60th Birthday. PSP., 1962.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.