Needham, J. (1985). Gunpowder as the fourth power, east and west: First East Asian History of Science Foundation lecture presented at the University of Hong Kong, 20 October 1983 (1. ed., [extended and amplified to the original lecture].). Hong Kong Univ. Pr.
Chicago-Zitierstil (17. Ausg.)Needham, Joseph. Gunpowder as the Fourth Power, East and West: First East Asian History of Science Foundation Lecture Presented at the University of Hong Kong, 20 October 1983. 1. ed., [extended and amplified to the original lecture]. [Hong Kong]: Hong Kong Univ. Pr, 1985.
MLA-Zitierstil (9. Ausg.)Needham, Joseph. Gunpowder as the Fourth Power, East and West: First East Asian History of Science Foundation Lecture Presented at the University of Hong Kong, 20 October 1983. 1. ed., [extended and amplified to the original lecture]. Hong Kong Univ. Pr, 1985.