↑M I, Polikarpov (1996). Continuous Advances In Qcd 1996 - Proceedings Of The Conference. World Scientific, 1996. p. 128.
↑Feild, Edward (1847). "A charge delivered to the clergy of the diocese of Newfoundland ... 1847". The British Library: 22. {{cite journal}}: Cite journal ต้องการ |journal= (help)
↑BLACKWOOD, WILLIAM (1839). "THE QUARTERLY JOURNAL OF AGRICULTURE, VOL IX JUNE 1838- MARCH 1839". The Quarterly Journal of Agriculture. 9: 181.
↑Parliament, Legislative Assembly, Canada, Parliament (1855). "Journals of the Legislative Assembly of the Province of Canada, Volume 13, Part 2". Journals of the Legislative Assembly of the Province of Canada. 13 (2): 811.
David DeSteno (2018). Emotional Success: The Power of Gratitude, Compassion, and Pride. Eamon Dolan/Houghton Mifflin Harcourt. ISBN978-0544703100. Description & contents, summarizing scientific studies.
Kenner, Ellen (Summer 2020). "How to Savor Gratitude and Disarm 'Gratitude Traps'". The Objective Standard. Glen Allen Press. 15 (2): 13–22.
Kristi Nelson (2020). Wake Up Grateful: The Transformative Practice of Taking Nothing for Granted. ISBN 9781635862447.
Emmons, R.A. (2016). The Little Book of Gratitude: Create a Life of Happiness and Well-Being By Giving Thanks. London: Gaia. 2016 ISBN 9781856753654.
Emmons, Robert A. (2013) Gratitude Works!: A Twenty-One-Day Program for Creating Emotional Prosperity. San Francisco : Jossey-Bass, 2013 SBN 9781118131299.
Emmons, R.A. (2007). THANKS! How the New Science of Gratitude Can Make You Happier. Boston, MA: Houghton-Mifflin. ISBN9780618620197 (reprinted in paperback titled THANKS! How Practicing Gratitude Can Make You Happier New York: Mariner Books, 2008 ISBN9780547085739). Translated into French as Merci ! : quand la gratitude change nos vies, Turkish as Teşekkür ederim, and Chinese as 愈感恩, 愈富足 /Yu gan en, yu fu zu.
Emmons, R.A. & Hill, J. (2001). Words of gratitude for mind, body, and soul. Radnor, PA: Templeton Foundation Press.
Emmons, R.A. (1999). The psychology of ultimate concerns: Motivation and spirituality in personality. New York: The Guilford Press.ISBN9781572304567.