Flere bøker av Gregory Collins:

• Mental Illness and Psychiatric Treatment

  A Guide for Pastoral Counselors

  Gregory Collins , Rev Thomas Culbertson og Harold G Koenig

  Heftet

  

• THE Leadership Mind

  Mastering the Superlative Qualities of Successful Leadership

  Gregory Collins

  Heftet

  

• The Navy Go-Getter

  A Story about Ambition and Persistent Desire

  Gregory Collins

  Heftet