APA-ийн эшлэл(7 дахь хэвлэлт)

Narravula Priyank. (2012). Industry and company research - Ports and shipping -India. NMIMS SBM.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Narravula Priyank. Industry and Company Research - Ports and Shipping -India. Mumbai: NMIMS SBM, 2012.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Narravula Priyank. Industry and Company Research - Ports and Shipping -India. NMIMS SBM, 2012.