This issue has variants.
Cover inks credit from Sinnott's personal records. Nick Caputo believes Sinnott's record to be in error and sees strong evidence of Esposito inking. Corroborating Sinnott inks credits are in The Marvel Comics Index (Olshevsky 1981) and Official Index to the Marvel Universe (Jensen et al. 2011); these are also sources for letters credit.
Letters from Jack Frost, Jim Hornby, Brian Earl Brown, Bill Plenge, Ron Cartwright, Mark S. Meadows, Christopher Jaroche, Neal Meyer, Peter Sanderson, Christy Kanes.