Martin, S., & Layson, M. (2001). Mas mabigat na parusa, ipataw-Noli / Sammy Martin at Mer Layson. Kabayan.
Dyfyniad Arddull ChicagoMartin, Sammy, and Mer Layson. "Mas Mabigat Na Parusa, Ipataw-Noli / Sammy Martin at Mer Layson." Kabayan 2001.
Dyfyniad MLAMartin, Sammy, and Mer Layson. "Mas Mabigat Na Parusa, Ipataw-Noli / Sammy Martin at Mer Layson." Kabayan, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.