APA

Wang F., Yang Q., .Age at marriage and the first birth interval : the emerging change in sexual behavior among young couples in China. : .

Chicago

Wang F, Yang Q, .Age at marriage and the first birth interval : the emerging change in sexual behavior among young couples in China. : .

Harvard

Wang F., Yang Q., .Age at marriage and the first birth interval : the emerging change in sexual behavior among young couples in China. : .

MLA

Wang F, Yang Q, .: . .