ebrary, Inc, & Watkinson, S. (2009). Issues in ophthalmic practice: Current and future challenges. M&K Update Ltd..
芝加哥风格引文ebrary, Inc, 与 Sue Watkinson. Issues in Ophthalmic Practice: Current and Future Challenges. Cumbria [England]: M&K Update Ltd., 2009.
MLA引文ebrary, Inc, 与 Sue Watkinson. Issues in Ophthalmic Practice: Current and Future Challenges. M&K Update Ltd., 2009.
警告：这些引文格式不一定是100％准确.