You are very welcome to include a link referencing any of my crochet tutorials or patterns in your own patterns. (You may not, however, copy or otherwise reproduce any part of my patterns, tutorials or photos in your own patterns.)
To make this easier for you, all my free patterns and tutorials have a shortlink that goes directly to the pattern instructions and will look neater in your printed pattern (e.g. www.planetjune.com/hearts or www.planetjune.com/magicring). There should be instructions at the top of each pattern/tutorial page that include the relevant shortlink. If you don’t see the shortlink for the pattern/tutorial you wish to reference, please email me to ask for it!
For my crochet tutorials, you may link directly to specific tutorials, and/or to the crochet tutorial index at www.planetjune.com/help