EndNote & Zotero are similar apps, but if you just need a quick way to generate citations in APA/MLA/etc. formats you may use websites like EasyBib & Citation Machine.

Dear Jennifer,

I would recommend Publons. It is an excellent tool for this purpose.

Publons

Mendly, Zotero, Endnote

EndNote and Publons

End Note is really good but not free.. gives 30 days free trial.....

Mendeley only

Wow, thank you very much.

hey, this might help.

https://en.wikipedia.org/wiki/Comparison_of_reference_management_software

I will recommend this post:

https://www.researchgate.net/post/What_is_the_best_Mendeley_or_Endnote_as_a_reference_manager_software

Try publons

You can try Zotero app

Endnote, publons, zotero, qiqqa, docear or Refworks. Any one can do. It depends on which is the most convenient for you. Overall, Endnote appears to have the most capabilities and functionalities plus it has an unlimited storage. It also has an edge in accurately detecting and removing duplicate citations and allows you to conveniently cite while you write without having to exit the writing page. It is a paid app. Qiqqa is free (with an option for premium) and can easily be accessed from most devices. It equally has lots of exiting functions.

There are several systems that you can choose according to the characteristics of each. The detailed list is as follows:

https://en.wikipedia.org/wiki/Comparison_of_reference_management_software

I hope you find it useful.