APA (7th ed.) Citation

Observatori de l'Ebre. (1987). Sondeos [El arenosillo]. s.n.

Chicago Style (17th ed.) Citation

Observatori de l'Ebre. Sondeos [El Arenosillo]. [S.l.: s.n, 1987.

MLA (9th ed.) Citation

Observatori de l'Ebre. Sondeos [El Arenosillo]. s.n, 1987.

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