Back when I was a kid, my local library had a copy of this -
https://www.ebay.co.uk/p/1205373316 - and I checked it out a lot when I was young and fascinated by such books (And yes, I think it explains the Paraquet/Paraquat thing).
Covers the whole thing from the Argentine invasion and the local Marines beating the S**t out of the Guerrico with - I think - a Bren gun and a Carl Gustav (As well as the senior RM NCO taking aim at the bridge with an L42), to the Argentines taking the Marines prisoner and being scared s**tless when they found one guy had some fire-axes stashed about his person, to the attack on the Santa Fe (First ever attack on a submarine entirely carried out by helicopter) to the eventual retaking of the Island.
Can't speak for the accuracy of the book but was fascinated by it as a teenager - probably not worth spending 94 quid on though!