APA
Pereira-da-Silva T., Galrinho A., Branco L., Antunes E. & Cruz Ferreira R. (20140421). Unexpected cause of systolic dysfunction in an octogenarian. : Revista portuguesa de cardiologia : orgao oficial da Sociedade Portuguesa de Cardiologia = Portuguese journal of cardiology : an official journal of the Portuguese Society of Cardiology.
Chicago
Pereira-da-Silva Tiago, Galrinho Ana, Branco Luísa, Antunes Eduardo and Cruz Ferreira Rui. 20140421. Unexpected cause of systolic dysfunction in an octogenarian. : Revista portuguesa de cardiologia : orgao oficial da Sociedade Portuguesa de Cardiologia = Portuguese journal of cardiology : an official journal of the Portuguese Society of Cardiology.
Harvard
Pereira-da-Silva T., Galrinho A., Branco L., Antunes E. and Cruz Ferreira R. (20140421). Unexpected cause of systolic dysfunction in an octogenarian. : Revista portuguesa de cardiologia : orgao oficial da Sociedade Portuguesa de Cardiologia = Portuguese journal of cardiology : an official journal of the Portuguese Society of Cardiology.
MLA
Pereira-da-Silva Tiago, Galrinho Ana, Branco Luísa, Antunes Eduardo and Cruz Ferreira Rui. Unexpected cause of systolic dysfunction in an octogenarian. : Revista portuguesa de cardiologia : orgao oficial da Sociedade Portuguesa de Cardiologia = Portuguese journal of cardiology : an official journal of the Portuguese Society of Cardiology. 20140421.