APA-Zitierstil (7. Ausg.)

(1980). North Sea, southern area, oil and gas activity and concession map 1980. Offshore Promotional Services.

Chicago-Zitierstil (17. Ausg.)

North Sea, Southern Area, Oil and Gas Activity and Concession Map 1980. Maidenhead u.a: Offshore Promotional Services, 1980.

MLA-Zitierstil (9. Ausg.)

North Sea, Southern Area, Oil and Gas Activity and Concession Map 1980. Offshore Promotional Services, 1980.