Marvel
X-Men: Dark Phoenix Saga Omnibus #[nn]
published January 2018
X-Men: Children of the Atom #[8]
published January 2019
Marvel Gold. La Imposible Patrulla-X #2 published February 2012
Les Mystérieux X-Men #35/36 published ?
The Official Marvel Index to the X-Men #7 published July 1988
Classic X-Men #34 [Direct] published June 1989
Essential X-Men #2 [First Printing] published August 1997
Wizard X-Men Masterpiece Edition #1 published December 2003
Marvel Premiere Classic #21 [Direct] published January 2009
X-Men Classic #4 published December 2012
X-Men Classic #4 published December 2012
X-Men: Proteus #[nn] [Premiere Edition] published January 2009
Marvel Gold. La Imposible Patrulla-X #2 published February 2012
Classic X-Men #34 [Direct] published June 1989
Marvel Special #11 published August 1997
Essential X-Men #2 [First Printing] published August 1997
Wizard X-Men Masterpiece Edition #1 published December 2003
X-Men Classic #4 published December 2012