Não informado. (1972). Offshore services and technology. Spearhead Publications.
Chicago-Zitierstil (17. Ausg.)Não informado. Offshore Services and Technology. Surrey, Inglaterra: Spearhead Publications, 1972.
MLA-Zitierstil (8. Ausg.)Não informado. Offshore Services and Technology. Spearhead Publications, 1972.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.