Hinzen, Heribert
Adult education and development
Adult Education, 1982
 Buku Teks
Knowles, Malcolm S.
The modern practice of adult education : from pedagogy
Cambridge University Press, 1980
 Buku Teks
Knowles, Malcolm S.
The Adult Learner : The definitive classic in adult education and human resource development
Routledge, 2015
 Buku Teks
Pradez, El.
Dictionnaire des gallicismes les plus usites / El. Pradez
Payot, 1951
 Buku Referensi
Knowles, Malcolm S.
The modern practice of adult education : andragogy versus pedagogy
Association Press, 1976
 Buku Teks