Vincent Peale, N. (2019). The power of positive thinking for young people. Better yourself books.
Chicago-referens (17:e uppl.)Vincent Peale, Norman. The Power of Positive Thinking for Young People. India: Better yourself books, 2019.
MLA-referens (9:e uppl.)Vincent Peale, Norman. The Power of Positive Thinking for Young People. Better yourself books, 2019.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.