Gaya APA
Peale, N, V.
(1991).
Enam sikap pemenang : six attitudes for winners
(
Cet. 1)
.
Jakarta:
BPK Gunung Mulia.
Gaya MLA
Peale, Norman, Vincent.
"Enam sikap pemenang : six attitudes for winners".
Cet. 1
Jakarta:
BPK Gunung Mulia,
1991.
Text.