LETTERS.

MLA

Phetteplace, Gary, et al. “LETTERS.” Heating/Piping/Air Conditioning Engineering, vol. 81, no. 10, Oct. 2009, pp. 6–9. EBSCOhost, widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=asx&AN=44768210&authtype=sso&custid=ns315887.

APA

Phetteplace, G., Damiano, L. A., Bearg, D. W., Mazzoni, S., McGraw, M., & Lentz, M. S. (2009). LETTERS. Heating/Piping/Air Conditioning Engineering, 81(10), 6–9.

Chicago

Phetteplace, Gary, Leonard A. Damiano, David W. Bearg, Steve Mazzoni, Michael McGraw, and Mark S. Lentz. 2009. “LETTERS.” Heating/Piping/Air Conditioning Engineering 81 (10): 6–9. http://widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=asx&AN=44768210&authtype=sso&custid=ns315887.