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