APA Alıntı

Smith, P. M., & Warr, K. E. (1991). Global environmental issues.

Chicago Stili Alıntı

Smith, Paul M., ve Kiki; Ed Warr. Global Environmental Issues. London, Hodder & Stoughton, 1991.

MLA Alıntı

Smith, Paul M., ve Kiki; Ed Warr. Global Environmental Issues. 1991.