APA
(1993). Proceedings of the National Academy Of Sciences of the United States of America. U.S.A: American Institute of Physics.
Chicago
1993. Proceedings of the National Academy Of Sciences of the United States of America. U.S.A: American Institute of Physics.
Harvard
(1993). Proceedings of the National Academy Of Sciences of the United States of America. U.S.A: American Institute of Physics.
MLA
Proceedings of the National Academy Of Sciences of the United States of America. U.S.A: American Institute of Physics. 1993.