Vivi Angriani and Darto and Mas'ud Zein (2022) The effect of using group investigation learning model and prior knowledge toward student problem solving skills on Mathematics subject at junior high school (Hasil Check Similarity). Universitas Islam Negeri Sultan Syarif Kasim Riau.

VIVI ANGRIANI and Darto and Mas'ud Zein (2022) The effect of using group investigation learning model and prior knowledge toward student problem solving skills on Mathematics subject at junior high school (Peer Review). Universitas Islam Negeri Sultan Syarif Kasim Riau.

Mas'ud Zein (2013) MASTERY LEARNING: Faktor-faktor yang Mempengaruhinya (Peer Review). Universitas Islam Negeri Sultan Syarif Kasim Riau.

Mas'ud Zein and Darto (2012) EVALUASI PEMBELAJARAN MATEMATIKA. Daulat Riau, Pekanbaru. ISBN 979-3757-04-3