Hello, I am creating an ecommerce Aroma & Therapy website to essential oil products and want to know how I can legally copy formulas/recipes of essential oil blends that I have seen in books and on the internet. I know that I must reference where I obtained my information from i.e. The Fragrant Garden, Valerie Worwood, Mcmillan London Ltd, 1990., but inside the cover of books it has a copyright symbol. An example: Chapped Lips Chamomile 2 drops, Geranium 2 drops. Mix well together with1 dessertspoon of Aloe Vera Gel There are not many ways I can alter this recipe to make it look like I am not copying. I am not selling the recipe just the ingredients it is made from. For my own personal research when studying I know I can copy information and reference its source but not sure when I want to use it for a commercial venture where I am indirectly profiting from the recipe and I don't want any issues with them taking me to court for copying their work. Can you please advise as to how I can legally do this without having to get the authors permission as some of the original publishers and authors no longer exist. Very appreciate for assisting me with this query. I look forward to your reply.