Gaya APA
Nasr, R., T. (1980).
The Essentials of Linguistic Science: Selected and Simplified Readings (1).
England:
Longman Group UK Limited.
Gaya MLA
Nasr, Raja, T..
"The Essentials of Linguistic Science: Selected and Simplified Readings".
1
England:
Longman Group UK Limited,
1980.
Buku Inti.