APA (7th ed.) Citation

Howes, B., & Howes, C. (1991). The ballooning manual / Bob & Carol Howes. Airlife.

Chicago Style (17th ed.) Citation

Howes, Bob, and Carol Howes. The Ballooning Manual / Bob & Carol Howes. Airlife, 1991.

MLA (9th ed.) Citation

Howes, Bob, and Carol Howes. The Ballooning Manual / Bob & Carol Howes. Airlife, 1991.

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