Gaya APA
Ashari, R, T.
(2008).
SEQ : Spiritual Engineering Quotient
.
Yogyakarta:
Arti Bumi Antaran.
Gaya MLA
Ashari, Rahmat, Thohir.
"SEQ : Spiritual Engineering Quotient".
Yogyakarta:
Arti Bumi Antaran,
2008.
Buku Teks.