APA (7th ed.) Citation

Porter & Prince. (1999). Frommer's Denmark. Macmillan Travel USA.

Chicago Style (17th ed.) Citation

Porter and Prince. Frommer's Denmark. New York: Macmillan Travel USA, 1999.

MLA (9th ed.) Citation

Porter and Prince. Frommer's Denmark. Macmillan Travel USA, 1999.

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