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I tried to calculate one of the problems in the textbook Gauge Theory of Elementary Particle Physics by Ta-Pei Cheng and Ling-Fong Li. On page 248 you can find the following calculation of a loop
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Feynman's quantum mechanics – Quantum field theory
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Problems in Quantum Field Theory
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SkriptQFT1.pdf
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What Is a Quantum Field Theory? | Mathematical physics
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20 Best Quantum Field Theory Books of All Time - BookAuthority
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quantum field theory - Mistakes in the Wikipedia figure on elementary particle interactions - Physics Stack Exchange
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Quantum Field Theory ✓ Applications and Implications
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No-Nonsense Quantum Field Theory: A Student-Friendly Introduction: Schwichtenberg, Jakob: 9783948763015: : Books
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Quantum field theory for beginners, How to learn quantum field theory
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Quantum Field Theory, String Theory, and Predictions (Part 7) – Of Particular Significance
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