Gaya APA
Purwanto, . et al (2002).
Succes Through Positive Thinking (Jalan spiritual berpikir posistif) .
Bandung:
Nuansa Cendikia.
Gaya MLA
Purwanto, . et al.
"Succes Through Positive Thinking (Jalan spiritual berpikir posistif)".
Bandung:
Nuansa Cendikia,
2002.
Text.