problem pączątkującego z tablicami

<?php

$tablica=array(
gibson,
fender,
esp,
ltd,
squier);

//for(i=0;i<=4;i++){

print($tablica[1]);
//}
?>

Notice: Use of undefined constant gibson - assumed 'gibson' in D:\xampp\htdocs\Nowyfolder\tablica\tablica.php on line 4

Notice: Use of undefined constant fender - assumed 'fender' in D:\xampp\htdocs\Nowyfolder\tablica\tablica.php on line 5

Notice: Use of undefined constant esp - assumed 'esp' in D:\xampp\htdocs\Nowyfolder\tablica\tablica.php on line 6

Notice: Use of undefined constant ltd - assumed 'ltd' in D:\xampp\htdocs\Nowyfolder\tablica\tablica.php on line 7

Notice: Use of undefined constant squier - assumed 'squier' in D:\xampp\htdocs\Nowyfolder\tablica\tablica.php on line 8
fender

"gibson"