#	Person	Titel	Jahr
1	Blöcher, Detlef u.a.	Worth Keeping : Global perspectives on best practice in missionary retension	2007
2	Núñez C., Emilio Antonio u.a.	Crisis and Hope in Latin America : An Evangelical Perspective (überarbeitete Ausgabe)	1996
3	Taylor, William David	Too Valuable to Lose : exploring the causes and cures of missionary attrition	1997