Gaya APA
Anies, ., Emirfan, .
(2021).
Waspada Penularan Covid-19 Varian Delta
(
Cet. 1st)
.
Yogyakarta:
Ar - Ruzz Media.
Gaya MLA
Anies, ., Emirfan, .
"Waspada Penularan Covid-19 Varian Delta".
Cet. 1st
Yogyakarta:
Ar - Ruzz Media,
2021.
Text.