Gaya APA
Richards, L. (-1977).
U-Turn: Dr.Luke's guide to a new you, 4th pr. : You can be transformed. .
(Wheaton):
Voctor Books.
Gaya MLA
Richards, Larry.
"U-Turn: Dr.Luke's guide to a new you, 4th pr. : You can be transformed. ".
(Wheaton):
Voctor Books,
-1977.
Buku.