Muhammad, Y. Stairway to Heaven= Nasihat-nasehat "Runcing" Beraroma surga/ KH. Yusuf Myhammad, SQ; Editor, Masmuni Mahatma. Bandung: Media Cendekia.
Παραπομπή σε μορφή Chicago (17η εκδ.)Muhammad, Yusuf. Stairway to Heaven= Nasihat-nasehat "Runcing" Beraroma Surga/ KH. Yusuf Myhammad, SQ; Editor, Masmuni Mahatma. Bandung: Media Cendekia.
Παραπομπή σε μορφή MLA (8th εκδ.)Muhammad, Yusuf. Stairway to Heaven= Nasihat-nasehat "Runcing" Beraroma Surga/ KH. Yusuf Myhammad, SQ; Editor, Masmuni Mahatma. Bandung: Media Cendekia.
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