ÖKTEN, A. 1979. The Sunspot Observations made in 1973. Review of Faculty of Science, University of Istanbul , vol.44 , 211-220.

ÖKTEN, A., (1979). The Sunspot Observations made in 1973. Review of Faculty of Science, University of Istanbul , vol.44, 211-220.

ÖKTEN, Adnan. "The Sunspot Observations made in 1973," Review of Faculty of Science, University of Istanbul , vol.44, 211-220, 1979

ÖKTEN, Adnan. "The Sunspot Observations made in 1973." Review of Faculty of Science, University of Istanbul , vol.44, pp.211-220, 1979

ÖKTEN, A. (1979) . "The Sunspot Observations made in 1973." Review of Faculty of Science, University of Istanbul , vol.44, pp.211-220.

@article{article, author={Adnan ÖKTEN}, title={The Sunspot Observations made in 1973}, journal={Review of Faculty of Science, University of Istanbul}, year=1979, pages={211-220} }