Gaya APA
Helder, Chris. (2016).
Useful Belief: Because it's Better than Positive Thinking .
Australia:
Wiley.
Gaya Chicago
Helder, Chris.
Useful Belief: Because it's Better than Positive Thinking.
Australia:
Wiley,
2016.
Buku.
Gaya MLA
Helder, Chris.
Useful Belief: Because it's Better than Positive Thinking.
Australia:
Wiley,
2016.
Buku.
Gaya Turabian
Helder, Chris.
Useful Belief: Because it's Better than Positive Thinking.
Australia:
Wiley,
2016.
Buku.