Gaya APA
Spiritual Teaching. (2010).
Yogyakarta:
Pustaka Insan Madani.
Gaya Chicago
Spiritual Teaching.
Cet-7.
Yogyakarta:
Pustaka Insan Madani,
2010.
Text.
Gaya MLA
Spiritual Teaching.
Cet-7.
Yogyakarta:
Pustaka Insan Madani,
2010.
Text.
Gaya Turabian
Spiritual Teaching.
Yogyakarta:
Pustaka Insan Madani,
2010.
Print.