Salwa, S., 		Aini, Q., & 		Switrayni, N.
(2022).
 &beta;-Dual Dari Ruang Barisan (N&#773;,&Delta;&lambda;)<sub>	&infin;</sub>, (N&#773;,&Delta;&lambda;), Dan (N&#773;,&Delta;&lambda;)<sub>O</sub>.
<em>Jurnal Matematika, 11</em>(2), 119-124.
doi:10.24843/JMAT.2021.v11.i02.p141