Gaya APA
Eckstut, Samuela. (2000).
Workbook : Focus On Grammar .
Longman:
Pearson Education.
Gaya Chicago
Eckstut, Samuela.
Workbook : Focus On Grammar.
Longman:
Pearson Education,
2000.
.
Gaya MLA
Eckstut, Samuela.
Workbook : Focus On Grammar.
Longman:
Pearson Education,
2000.
.
Gaya Turabian
Eckstut, Samuela.
Workbook : Focus On Grammar.
Longman:
Pearson Education,
2000.
.