Social skills : the study of real of skills; Vol. 4
edited by W.T. Singleton
MTP Press, 1983
Buku Teks SO
Management skills : the study of real skills; Vol. 3
edited by W.T. Singleton
MTP Press, 1981
Buku Teks SO
Implementing practical skills in a distance learning of agribussiness study program at universitas terbuka
Artikel Jurnal
Taylor, Judith Combes
Practical problem-solving skills in the workplace
[American Management Association, ], 1994
eBooks
Tempest, P.J.
Initial skills in bricklaying: a practical guide
Pergamon Press, 1981
Buku Teks SO