Saying a period of time of -ties (ex: the 80s to 90s) for a research paper correctly

I’m trying to write a sentence that mentions a specific period of time, though I’m not sure if I wrote it correctly or not. Here’s what I have.

We have succeeded in the era of the 1960s to 1980s

Things I’m unsure about:
the use of "to" between 1960s and 1980s, maybe I could replace it with "until" instead?
the way I write "1960s" or "1980s" maybe "1960s-1980s", "sixties to eighties", "60s to 80s" could be used instead?