APA-ийн эшлэл(7 дахь хэвлэлт)

(1955). Keys to happiness: A Reader's Digest guide to successful living. The Reader's Digest Association.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Keys to Happiness: A Reader's Digest Guide to Successful Living. The Reader's Digest Association, 1955.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Keys to Happiness: A Reader's Digest Guide to Successful Living. The Reader's Digest Association, 1955.