APA (7th ed.) Citation

Shields, L. (2011). Seeing is believing (opinion letter). Elsevier Science.

Chicago Style (17th ed.) Citation

Shields, Linda. Seeing Is Believing (opinion Letter). Elsevier Science, 2011.

MLA (9th ed.) Citation

Shields, Linda. Seeing Is Believing (opinion Letter). Elsevier Science, 2011.

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