Gulliver's Travels is written in how many volumes?

Gulliver’s Travels:
 - Its a four-part satirical work by Anglo-Irish author Jonathan Swift.
-  published anonymously in 1726 as Travels into Several Remote Nations of the World.

The four parts are: 
Part I: A Voyage to Lilliput
Part II: A Voyage to Brobdingnag
Part III: A Voyage to Laputa, Balnibarbi, Luggnagg, Glubbdubdrib and Japan
Part IV: A Voyage to the Land of the Houyhnhnms

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Jonathan Swift:
- pseudonym Isaac Bickerstaff, (born Nov. 30, 1667, Dublin, Ire.—died Oct. 19, 1745, Dublin)
- Anglo-Irish author, who was the foremost prose satirist in the English language.
- Jonathan Swift is the greatest satirist of the 18th century.

Best Works:
Besides the most celebrated and iconic novel,  Gulliver’s Travels (1726), he alsow wrote:
- A Tale of a Tub (1704)
- A Modest Proposal (1729)
- A Journey to Stella
- The Battle of the Books.

Source: An ABC of English Literature, Dr. M Mofizar Rahman