APA引文

Ward, P., & Kennedy, W. (1993). Maastrichtian ammonites from the Biscay region (France, Spain).

Chicago Style (17th ed.) Citation

Ward, P., and W. Kennedy. Maastrichtian Ammonites from the Biscay Region (France, Spain). 1993.

MLA引文

Ward, P., and W. Kennedy. Maastrichtian Ammonites from the Biscay Region (France, Spain). 1993.

警告：這些引文格式不一定是100％准確.