(2020). Keyword Index. Journal of Sciences, Islamic Republic of Iran, 31(4), 387-397.

. "Keyword Index", Journal of Sciences, Islamic Republic of Iran, 31, 4, 2020, 387-397.

(2020). 'Keyword Index', Journal of Sciences, Islamic Republic of Iran, 31(4), pp. 387-397.

, "Keyword Index," Journal of Sciences, Islamic Republic of Iran, 31 4 (2020): 387-397,

Keyword Index. Journal of Sciences, Islamic Republic of Iran, 2020; 31(4): 387-397.