APA (7th ed.) Citation

Gu, Y. (2004). The sex ratio at birth in China in 2000: A provincial level analysis. [publisher not identified].

Chicago Style (17th ed.) Citation

Gu, Yuan. The Sex Ratio at Birth in China in 2000: A Provincial Level Analysis. [Place of publication not identified]: [publisher not identified], 2004.

MLA (9th ed.) Citation

Gu, Yuan. The Sex Ratio at Birth in China in 2000: A Provincial Level Analysis. [publisher not identified], 2004.