APA Style
Kay, S., Jones, V. (2016).
Focus 4 Students' book + Word store + Class CDS + Teacher's avtiveteach (Cetakan 1).
England:
Pearson Education Limited.
MLA Style
Kay, Sue., Jones, Vaughan.
"Focus 4 Students' book + Word store + Class CDS + Teacher's avtiveteach".
Cetakan 1
England:
Pearson Education Limited,
2016.
Buku SMA Athalia.