= Quantum field theory book
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* https://web.archive.org/web/20150623011722/http://users.physik.fu-berlin.de/~kleinert/b6/psfiles/qft.pdf by https://en.wikipedia.org/wiki/Hagen_Kleinert[Hagen Kleinert] (2015). 1500 pages!
* The Quantum Theory of Fields by Steven Weinberg (2013) https://www.cambridge.org/core/books/quantum-theory-of-fields/22986119910BF6A2EFE42684801A3BDF
* Quantum Field Theory by Lewis H. Ryder 2nd edition (1996) https://www.amazon.co.uk/Quantum-Field-Theory-Lewis-Ryder/dp/0521478146
* Lectures of Quantum Field Theory by Ashok Das (2018) https://www.amazon.co.uk/Lectures-Quantum-Field-Theory-Ashok-ebook/dp/B07CL8Y3KY
* A Modern Introduction to Quantum Field Theory by Michele Maggiore (2005) https://www.amazon.co.uk/Modern-Introduction-Quantum-Theory-Physics/dp/0198520743