Gaya APA
Perrett,Heli E. (1985).
Involving women in sanitation projects/Heli E.Perrett .
Washington:
.
Gaya Chicago
Perrett,Heli E.
Involving women in sanitation projects/Heli E.Perrett.
Washington:
,
1985.
.
Gaya MLA
Perrett,Heli E.
Involving women in sanitation projects/Heli E.Perrett.
Washington:
,
1985.
.
Gaya Turabian
Perrett,Heli E.
Involving women in sanitation projects/Heli E.Perrett.
Washington:
,
1985.
.