Cita APA (7th ed.)
Kryan, I. COVID-19: Recover from Coronavirus Now. Lulu.
Cita Chicago (17th ed.)
Kryan, Igor. COVID-19: Recover from Coronavirus Now. EUA: Lulu.
Cita MLA (9th ed.)
Kryan, Igor. COVID-19: Recover from Coronavirus Now. Lulu.
Atenció: Aquestes cites poden no estar 100% correctes.