hello 

sountharya syllabus in the year 2019 for CE is the various subjects includes they are general aptitude and mandetory is the engineering mathematics and sturatural engineering envirnoment engineering transaportation engineering geo technogoly engineering water resource engineering geomatics engineering and also for your referance I am providing the link of the carrer360 GATE syllabus of CE indetail  in this link you can get the syllabus and also the refernece books with its authors name too

https://engineering.careers360.com/articles/gate-syllabus-for-civil-engineering

thank you