Cite
SIGMA hard X-ray observations of GX339-4
MLA
Ph. Laurent, et al. “SIGMA Hard X-Ray Observations of GX339-4.” Advances in Space Research, vol. 13, Dec. 1993, pp. 743–46. 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=edsair&AN=edsair.doi...........ae168af2a4bbea552eb07995b0bf0342&authtype=sso&custid=ns315887.
APA
Ph. Laurent, Francois Lebrun, E. Churazov, M. Gilvanov, I. Chulkov, B. Novikov, J. P. Roques, A. V. Kuznetsov, A. Diachkov, J. A. Paul, L. Salotti, E. Jourdain, P. Mandrou, R. A. Sunyaev, N. Khavenson, & Laurent Bouchet. (1993). SIGMA hard X-ray observations of GX339-4. Advances in Space Research, 13, 743–746.
Chicago
Ph. Laurent, Francois Lebrun, E. Churazov, M. Gilvanov, I. Chulkov, B. Novikov, J. P. Roques, et al. 1993. “SIGMA Hard X-Ray Observations of GX339-4.” Advances in Space Research 13 (December): 743–46. 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=edsair&AN=edsair.doi...........ae168af2a4bbea552eb07995b0bf0342&authtype=sso&custid=ns315887.