Gaya APA

GOLDBERGER, A, L. et al (2018). Goldberger's clinical elektrocardiography: (9th ed.). United States of America: Elsevier.

Gaya MLA

GOLDBERGER, Ary, L.. et al. "Goldberger's clinical elektrocardiography:". 9th ed. United States of America: Elsevier, 2018. Text.