I prefer to use references labeled in a short style (like [1], (1) or exponents) because I can put them right after the most relevant word. I tend to follow this policy because if you write a sentence like: "I use scikit-image [1] jointly with scikit-learn [2] to detect and recognize these patterns...", then it's clearer and you don't need to refactor the text.

However, i can understand if you don't want to change that, it's not critical at all ;)

I really dislike references using words, but often, we don't have the choice :)