Anderson, G., Autier, P., Beral, V., Bosland, M., Fernández, E., Haslam, S., . . . Berthiller, J. (2007). Combined estrogen-progestogen contraceptives.
芝加哥风格引文Anderson, G., et al. Combined Estrogen-progestogen Contraceptives. 2007.
MLA引文Anderson, G., et al. Combined Estrogen-progestogen Contraceptives. 2007.
警告：这些引文格式不一定是100％准确.