Author. (n.d.). Home [Facebook page]. Facebook. Retrieved Month Day, Year, from http://xxxxx
Florida Memes. (n.d.). Home [Facebook page]. Facebook. Retrieved October 8, 2019, from https://www.facebook.com/morefloridamemes/
As in-text citation:
(Florida Memes, n.d.)
If you cite a particular post, you must cite it in the References page; you can follow the example and guidelines below.
Author. (Year, Month Day). Text of Facebook post, up to 20 words [Image attached] [Status update/Video/Infographic/Image]. Facebook. http://xxxxx
CNN. (2013, October 22). Could a mouse's back potentially hold the cure for baldness? A breakthrough may be on the horizon, researchers say. http://on.cnn.com/1cTftYk [Thumbnail link] [Status update]. Facebook. https://www.facebook.com/cnn/posts/10152027847166509
As in-text citation:
(CNN, 2013)
Source: Publication Manual, 10.15 (examples 105-106); APA Style: Reference Examples
This kind of texts is not handled well in a tool like Mendeley and is therefore recommended to do manually.