APA (7th ed.) Citation

HUBER. (1990). Nature explorer: A step-by-step guide. Troll Associates.

Chicago Style (17th ed.) Citation

HUBER. Nature Explorer: A Step-by-step Guide. New Jersey: Troll Associates, 1990.

MLA (8th ed.) Citation

HUBER. Nature Explorer: A Step-by-step Guide. Troll Associates, 1990.

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