Non-Fiction:
* The Medium: A Life in Two Worlds (1997): Altea's autobiography, detailing her life and experiences as a medium.
* The Power of Mediumship (2002): A guide to understanding and developing mediumship abilities.
* The Gift of Healing: A Spiritual Guide to Healing Yourself and Others (2004): A book on spiritual healing and its power.
* Your Life Beyond: A Practical Guide to Communicating with Loved Ones in the Spirit World (2006): Provides practical advice and exercises for connecting with loved ones who have passed away.
* The Power of Belief (2009): Explores the importance of belief and its influence on our lives.
* The Light Within: A Spiritual Guide to Finding Your True Self (2011): Offers guidance on finding one's true self and living a more fulfilling life.
* The Gift of Now (2012): A guide to living in the present moment and finding joy and peace.
* The Power of Angels (2013): A book on the role of angels in our lives and how to connect with them.
* The Gift of Love: A Spiritual Guide to Finding True Love (2015): Provides insights into finding true love and cultivating healthy relationships.
* The Power of the Universe (2017): A book on the power of the universe and how it impacts our lives.
* The Gift of Hope: A Spiritual Guide to Finding Hope in Difficult Times (2019): A guide to finding hope and resilience during challenging times.
Fiction:
* The Guardian of the Light (2016): Altea's first fictional novel, a tale about a young woman who discovers her powers and becomes a guardian of light.
This is not an exhaustive list, as she has written many other books, articles, and contributed to several publications. You can find more information about her works on her official website or by searching online.