Gaya APA
Bolitho, G, N, &, A.
(1987).
Start English For Science
(
4th)
.
Hongkong:
Longman.
Gaya MLA
Bolitho, G.D., Nogas, &, A.R..
"Start English For Science".
4th
Hongkong:
Longman,
1987.
Buku Analog.