Gaya APA
Susanto, H, A., Prasetyowati, E, R.
(2019).
Trigonometri
.
Yogyakarta:
Deepublish.
Gaya MLA
Susanto, Herry, Agus., Prasetyowati, Eko, Rini.
"Trigonometri".
Yogyakarta:
Deepublish,
2019.
Text.