Biology Research Guide

Review the "Name—Year" tab page for guidelines and examples from the official website of Scientific Style and Formatting (8th ed.).

Provides STEM-focused support categories and "each topic has a short, easily digestible video and an accompanying handout, exercise, or quiz."

Has tons of citations styles. The only major reference manager without corporate ownership.

it's a little like iTunes for academic papers.

Wikipedia has an extensive set of comparative charts for the reference management programs here and many others.

Papers collects and managers your papers, helps with citation management, and allows you to search scholarly collections from the program. Free 30-day trial, a Springer product.