APA (7th ed.) Citation

Gas Natural. (2004). Puerto Rico: Patrimonio cultural y natural. Laia Libros.

Chicago Style (17th ed.) Citation

Gas Natural. Puerto Rico: Patrimonio Cultural Y Natural. Barcelona: Laia Libros, 2004.

MLA (9th ed.) Citation

Gas Natural. Puerto Rico: Patrimonio Cultural Y Natural. Laia Libros, 2004.

Warning: These citations may not always be 100% accurate.