APA (7th ed.) Citation

Porter. (1998). Frommer: Portugal (15th ed.). MacMillan Travel.

Chicago Style (17th ed.) Citation

Porter. Frommer: Portugal. 15th ed. New York: MacMillan Travel, 1998.

MLA (9th ed.) Citation

Porter. Frommer: Portugal. 15th ed. MacMillan Travel, 1998.

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