Hello, I'm fairly new to lecturing and currently doing a few HPL sessions in my professional area. I've prepared a short (one hour) lecture for this week on a topic that has been brilliantly covered by a well regarded international organisation (they have produced two reports - one based on a systematic review of the issues and one setting out the proposed solutions). I've just realised that most (approx 70%) of the content of my lecture is taken from these reports and although I am citing these reports at the beginning and throughout (for specific diagrams), should I be basing so much of the content on just two reports? Even if they are very thorough and very appropriate for this session? Is there a rule of thumb I should be aware of? Any advice would be welcome!