APA (7th ed.) Citation

Spyglass Take a Guess A Look at Estimation. Compass Point Books.

Chicago Style (17th ed.) Citation

Spyglass Take a Guess A Look at Estimation. Compass Point Books.

MLA (9th ed.) Citation

Spyglass Take a Guess A Look at Estimation. Compass Point Books.

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