Gaya APA
Najid, M.
(2010).
Kecakapan Hidup Life Skill
(
Cet. 2)
.
Surabaya:
Surabaya Intellectual Club (SIC).
Gaya MLA
Najid, Moh..
"Kecakapan Hidup Life Skill".
Cet. 2
Surabaya:
Surabaya Intellectual Club (SIC),
2010.
Buku.