Tohutoro APA (7th ed.)

Ehlers, E. G. (1987). Optical mineralogy. Blackwell Scientific Publications.

Tohutoru Chicago (17th ed.)

Ehlers, Ernest G. Optical Mineralogy. Palo Alto, Calif.: Blackwell Scientific Publications, 1987.

Tohutoro MLA (8th ed.)

Ehlers, Ernest G. Optical Mineralogy. Blackwell Scientific Publications, 1987.