- E-bookEngaging Multiple Personalities Volume 1David Yeung
- E-bookEngaging Multiple Personalities Volume 2David Yeung
- E-bookEngaging Multiple Personalities - Living in MultiplicityDavid Yeung
- E-bookEngaging Multiple Personalities - The Collected Blog PostsDavid Yeung
- E-bookEngaging Multiple Personalities Volume 1 Traditional Chinese TranslationDavid Yeung
- E-bookSerie: Engaging Multiple PersonalitiesDavid Yeung