APA (7th ed.) Citation

National Geographic Maps (Firm) & Carroll, A. (1998). Spain and Portugal. The Society.

Chicago Style (17th ed.) Citation

National Geographic Maps (Firm) and Allen Carroll. Spain and Portugal. Washington, D.C.: The Society, 1998.

MLA (9th ed.) Citation

National Geographic Maps (Firm) and Allen Carroll. Spain and Portugal. The Society, 1998.

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