The Agatha Christie who's who / compiled by Randall Toye ; [edited by Katherine Koller ; ill. by Ron Berg].

Agatha Christie : Murder in four acts : a centenary celebration of 'The Queen of Crime' on stage, film, radio & TV / Peter Haining.

The life and crimes of Agatha Christie / Charles Osborne.

The Agatha Christie companion / Russell H. Fitzgibbon.

Agatha Christie : first lady of crime / edited by H. R. F. Keating.

Studies in Agatha Christie's writings. The behaviour of a good (great) deal, a lot, lots, much, plenty, many, a good (great) many.

Agatha Christie; mistress of mystery, by G.C. Ramsey.

Hello from Hell!!! : an autobiography by Jane Marple / transcribed for publication by William E. Studwell.

Agatha Christie, a biography / Janet Morgan.

The Bedside, bathtub & armchair companion to Agatha Christie / edited by Dick Riley and Pam McAllister ; introd. by Julian Symons.

The mystery of Agatha Christie / Gwen Robyns.