Referenslitteratur

2010-talet

2011:

Agatha Christie's Murder in the Making. Stories and Secrets from Her Archive 2011 (Brittiska utgåvan)
Utgiven i USA samma år under titeln: Agatha Christie. Murder in the Making. More Stories and Secrets from Her Notebooks¹.

2015:

Tom Adams Uncovered. The Art of Agatha Christie and Beyond 2015

2016:

Agatha Christie's Complete Secret Notebooks 2016 (Reviderad utgåva)