Gaya APA
Lie, Anita, Jacobs, George. (2002).
English via environmental education (cet. 1).
jakarta:
Gramedia WIdiasarana Indonesia.
Gaya Chicago
Lie, Anita, Jacobs, George.
English via environmental education.
cet. 1
jakarta:
Gramedia WIdiasarana Indonesia,
2002.
MP.
Gaya MLA
Lie, Anita, Jacobs, George.
English via environmental education.
cet. 1
jakarta:
Gramedia WIdiasarana Indonesia,
2002.
MP.
Gaya Turabian
Lie, Anita, Jacobs, George.
English via environmental education.
cet. 1
jakarta:
Gramedia WIdiasarana Indonesia,
2002.
MP.