A 25-inch Breakthrough.

MLA

Oltion, Jerry. “A 25-Inch Breakthrough.” Sky & Telescope, vol. 137, no. 2, Feb. 2019, pp. 70–73. 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=133247032&authtype=sso&custid=ns315887.

APA

Oltion, J. (2019). A 25-inch Breakthrough. Sky & Telescope, 137(2), 70–73.

Chicago

Oltion, Jerry. 2019. “A 25-Inch Breakthrough.” Sky & Telescope 137 (2): 70–73. 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=133247032&authtype=sso&custid=ns315887.