Gaya APA
Hartstein, J.
(1973).
Questions and Answers on Contact Lens Practice
(
2)
.
St. Louis:
The C.V. Mosby Company.
Gaya MLA
Hartstein, Jack.
"Questions and Answers on Contact Lens Practice".
2
St. Louis:
The C.V. Mosby Company,
1973.
Text.