"Journals stating that they follow the ICMJE Recommendations"
There are many subscription and free bibliographic citation management platforms. They allow for gathering and organization of citations (and attached full-text PDFs), and formatting citations and references in a paper (write-n-cite). Here is an in-depth comparison of reference managers' features.
EndNote is a subscription tool offered by the OHSU Library. For information on how to download, set up, and use EndNote, go to the OHSU Library How to Get EndNote guide below. Features include:
Zotero is a free, open source citation management tool. Features include:
WHAT YOU NEED FOR THE BEST *ZOTERO* EXPERIENCE
Instructions on how to install EndNote for Macs and PCs, and basic tips and tools.
The NLM Style Guide for Authors, Editors, and Publishers