Gaya APA
RAY, Sidney F.. (1977).
The lens and all its jobs .
London:
Focal Press.
Gaya Chicago
RAY, Sidney F..
The lens and all its jobs.
London:
Focal Press,
1977.
.
Gaya MLA
RAY, Sidney F..
The lens and all its jobs.
London:
Focal Press,
1977.
.
Gaya Turabian
RAY, Sidney F..
The lens and all its jobs.
London:
Focal Press,
1977.
.