Gaya APA
Walker, Elaine. (2000).
Grammar Practice: For Upper Intermediate Students (New Edition).
England:
Longman.
Gaya Chicago
Walker, Elaine.
Grammar Practice: For Upper Intermediate Students.
New Edition
England:
Longman,
2000.
Text.
Gaya MLA
Walker, Elaine.
Grammar Practice: For Upper Intermediate Students.
New Edition
England:
Longman,
2000.
Text.
Gaya Turabian
Walker, Elaine.
Grammar Practice: For Upper Intermediate Students.
New Edition
England:
Longman,
2000.
Print.