Gaya APA
Duke-Elder's Practice of Refraction. (1993).
London:
Churchill Livingstone.
Gaya Chicago
Duke-Elder's Practice of Refraction.
10.
London:
Churchill Livingstone,
1993.
Text.
Gaya MLA
Duke-Elder's Practice of Refraction.
10.
London:
Churchill Livingstone,
1993.
Text.
Gaya Turabian
Duke-Elder's Practice of Refraction.
London:
Churchill Livingstone,
1993.
Print.