Citing text from the Wiki

Sat, 29 Nov 2014 08:08:13 PST
How could I cite a page from the Wiki? 
Would the author be "Pacific Bulb Society" for a cited Wiki page on any specific genus? And how can I find the date?
Here's the example citation I found:
Author, A. A., & Author, B. B. (Date of publication). Title of article.Title of Online Periodical, volume number(issue number if available). Retrieved from

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