APA (7th ed.) Citation

Liu, Y. (1999). Enumerative theory of maps. Science Press [u.a.].

Chicago Style (17th ed.) Citation

Liu, Yanpei. Enumerative Theory of Maps. Beijing [u.a.]: Science Press [u.a.], 1999.

MLA (9th ed.) Citation

Liu, Yanpei. Enumerative Theory of Maps. Science Press [u.a.], 1999.