Joinbt series between two authors

[Carol]

Lindsay McKenna and Merline Lovelace are jointly doing a 6 stories in 3 books series. How to mark is my question?
Below 2 links where they talk about it and the book titles of the 2 out with the story titles also
http://lindsaymckenna.com/2013/10/cou...
http://blog.medicinegarden.com/tag/me...

2013 Nov 5: Course of Action
McKenna, Lindsay - Out of Harm’s Way
Merline Lovelace - Any Time, Any Place
2014 Sept 1: Course of Action: The Rescue
Lindsay McKenna - Jaguar Night
Merline Lovelace - Amazon Gold

Thanks

[rivka, Former Moderator]

A series can be written but multiple authors, as long as it has shared characters/universe/etc. This one seems to, so that's fine.

Not sure what you mean by "how to mark it"?

[Carol]

Not sure what to call it. I couldn't find that the authors gave it a name.
I could go with "Course of Action" since both books start out that way.
Can also argue "Sidewinders" as that is the nickname the group of men have from their high school football days.
I'll go with Course of Action for now.