Gaya APA
Peale, N, V, (. (1913).
Guideposts: personal messages of inspiration and faith. .
Kingswood:
The World's Work.
Gaya MLA
Peale, Norman, Vincent, (ed.).
"Guideposts: personal messages of inspiration and faith. ".
Kingswood:
The World's Work,
1913.
Buku.