中独合作
^ Chen, Yin-Ching, Civil Law Development: China and Taiwan page 8. Stanford Journal of East Asian Affairs, Spring 2002, Volume 2.
^ 同書., page 9.
^ Ellis, Howard S. French and German Investments in China page 12. Honolulu, 1929
^ China Year Book, 1929–1930 page 751–53. North China Daily News & Herald, 1930.
^ Sun Yat-sen. The International Development of China page 298. China Cultural Service, Taipei, 1953.
^ L'Allemagne et la Chine, Journée Industrielle, Issue Dec. 1931, Paris, 1931.
^ Chu Tzu-shuang. Kuomintang Industrial Policy Chungking, 1943.
^ Fischer, Martin. Vierzig Jahre deutsche Chinapolitik. Hamburg, 1962
^ Ed. Wheeler-Bennet, J. Documents on International Affairs.