Gaya APA
Sholikhah, I, M. et al (2002).
English For Specific Purposes: English For Biology .
Purwokerto:
Fakultas Sastra UMP.
Gaya MLA
Sholikhah, Ika, Maratus. et al.
"English For Specific Purposes: English For Biology".
Purwokerto:
Fakultas Sastra UMP,
2002.
Text.