Gaya APA
Yulisman, I.
(2009).
Tongue twister : warm up tongue and lips
(
Cet. 1)
.
Yogyakarta:
Media Khatulistiwa.
Gaya MLA
Yulisman, Indah.
"Tongue twister : warm up tongue and lips".
Cet. 1
Yogyakarta:
Media Khatulistiwa,
2009.
Buku.