BULUT, A. Et Al. 2016. Period changes in two contact binaries: V700 Cyg and PY Lyr. AIP Publishing , no.1722 , 400011-400015.

BULUT, A., BULUT, İ., ÇİÇEK, C., & ERDEM, A., (2016). Period changes in two contact binaries: V700 Cyg and PY Lyr. AIP Publishing , no.1722, 400011-400015.

BULUT, AHMET Et Al. "Period changes in two contact binaries: V700 Cyg and PY Lyr," AIP Publishing , no.1722, 400011-400015, 2016

BULUT, AHMET Et Al. "Period changes in two contact binaries: V700 Cyg and PY Lyr." AIP Publishing , no.1722, pp.400011-400015, 2016

BULUT, A. Et Al. (2016) . "Period changes in two contact binaries: V700 Cyg and PY Lyr." AIP Publishing , no.1722, pp.400011-400015.

@article{article, author={AHMET BULUT Et Al. }, title={Period changes in two contact binaries: V700 Cyg and PY Lyr}, journal={AIP Publishing}, year=2016, pages={400011-400015} }