annotated bibliography ( how does social media affect business?)

Hi, I have an Annotated Help write my assignment – Bibliography . My professor asked me to get 20 sources about ( How does social media affect business?! )

The annotated bibliography should be informative and descriptive and it should not exceed 70 words for each source. Basically, you have to read the abstract of each source and paraphrase the main points ( what the authors or researchers discussed, examined,etc..) Then you should add 1-2 sentences how the source is relevant or useful for my topic?

for sure, Ace homework tutors – APA citation should be added before the paragraph of each source.

What is an Annotated Help write my assignment – Bibliography ? check the website:

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How to Ace my homework – Write an Annotated Help write my assignment – Bibliography ? check the website : 

http://sites.umuc.edu/library/libhow/bibliography_tutorial.cfm

how my professor will evaluate me:

1- Ace homework tutors – APA-formatted and formatting

2- 20 sources

3- Accurate links and valid sources

4- Fairly accurate summaries

5-Sources relevant to a topic

6- Grammar and spelling

7- At least 4 scholarly/academic journals included