Does Leaders Guide have an apostrophe? [duplicate]

Using a leaders guide in a doctoral dissertation, does the title "Leaders Guide" have an apostrophe?

Solution 1:

"Leaders" here looks like an attributive noun, and so would not need the apostrophe. A relatively clear explanation can be found here: https://www.thoughtco.com/what-is-attributive-noun-1689012

According to that page (which lists its sources, though it's hard to say which one this is from):

The apostrophe is omitted when a plural head noun ending in s functions as an adjective rather than as a possessor

Presumably the guide is not possessed by leaders but is written to guide leaders. So you would not need an apostrophe in this case.