APA引文

Weersink, E. J. M. (1997). The natural variability in asthma: Two therapeutic approaches. E. Weersink.

Chicago Style (17th ed.) Citation

Weersink, Els J. M. The Natural Variability in Asthma: Two Therapeutic Approaches. [Netherlands]: E. Weersink, 1997.

MLA引文

Weersink, Els J. M. The Natural Variability in Asthma: Two Therapeutic Approaches. E. Weersink, 1997.

警告：这些引文格式不一定是100％准确.