Gaya APA
Sanborn, Mark. (2017).
The potential principles : a proven system .
[S.l.]:
Harper Collins.
Gaya Chicago
Sanborn, Mark.
The potential principles : a proven system.
[S.l.]:
Harper Collins,
2017.
Text.
Gaya MLA
Sanborn, Mark.
The potential principles : a proven system.
[S.l.]:
Harper Collins,
2017.
Text.
Gaya Turabian
Sanborn, Mark.
The potential principles : a proven system.
[S.l.]:
Harper Collins,
2017.
Print.