Fifteen Steps to Forever: Use these well-known observing targets as incremental stepping stones into the cosmic past.

MLA

Wedel, Mathew. “Fifteen Steps to Forever: Use These Well-Known Observing Targets as Incremental Stepping Stones into the Cosmic Past.” Sky & Telescope, vol. 135, no. 6, June 2018, pp. 64–71. 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=128727518&authtype=sso&custid=ns315887.

APA

Wedel, M. (2018). Fifteen Steps to Forever: Use these well-known observing targets as incremental stepping stones into the cosmic past. Sky & Telescope, 135(6), 64–71.

Chicago

Wedel, Mathew. 2018. “Fifteen Steps to Forever: Use These Well-Known Observing Targets as Incremental Stepping Stones into the Cosmic Past.” Sky & Telescope 135 (6): 64–71. 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=128727518&authtype=sso&custid=ns315887.