I have searched for the correct spelling of "macroregional / macro-regional" on the Internet, but there are used both variants (sometimes even on the same website).
Wiktionary spells it as "macroregional" but also suggests "macro-regional" as an alternative form.
Some other websites (like this one) use only "macro-regional".
I need to choose only one variant for an article. Which spelling is correct among those two? Or are they both interchangeable? I will be grateful for your help.
P. S. According to Wikipedia, as a noun it is "macroregion".