Bergós establishes five periods in Gaudí's productions: preliminary period, mudéjar-morisco (Moorish/mudéjar art), emulated Gothic, naturalist and expressionist, and organic synthesis.
Bergós menetapkan lima periode produksi karya Gaudí: periode pendahuluan, mudéjar-morisco (seni Moor/mudéjar), imitasi Gothik, naturalis dan ekspresioinis, dan sintesis organik.