Gaya APA
Groth, C.
(2013).
Essay Writing : English For Academic Purposes
(
Edisi 2)
.
Yogyakarta:
Andi.
Gaya MLA
Groth, Cheryl.
"Essay Writing : English For Academic Purposes".
Edisi 2
Yogyakarta:
Andi,
2013.
TEXT.