APA (7th ed.) Citation

Viking Youth. (1980). Calendar 'Northland' 1981. Viking Youth.

Chicago Style (17th ed.) Citation

Viking Youth. Calendar 'Northland' 1981. London: Viking Youth, 1980.

MLA (8th ed.) Citation

Viking Youth. Calendar 'Northland' 1981. Viking Youth, 1980.

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