Fifty activities for self-development.

Bibliográfalaš dieđut
Váldodahkki:	Francis, Dave
Eará dahkkit:	Woodcock, Mike
Materiálatiipa:	Girji
Giella:	eaŋgalasgiella
Almmustuhtton:	England Gower Publishing Company Limited 1982.
Fáttát:	Management development.