Gaya APA
Wasito, ., Wuryastuti, H.
(2020).
CORONAVIRUS Sars - Mers - Covid-19
.
Yogyakarta:
Penerbit Andi.
Gaya MLA
Wasito, ., Wuryastuti, Hastari.
"CORONAVIRUS Sars - Mers - Covid-19".
Yogyakarta:
Penerbit Andi,
2020.
.