Gaya APA
Swanson, C, P., Gretler,Armin, . (1972).
The training of adult middle-level personnel .
Paris:
Paris: UNESCO; 1972.
Gaya MLA
Swanson, Carl, P.., Gretler,Armin, .
"The training of adult middle-level personnel".
Paris:
Paris: UNESCO; 1972,
1972.
Text.