Purba, R. Angkutan muatan laut. Rineka Cipta.
Chicago Style (17th ed.) CitationPurba, Radiks. Angkutan Muatan Laut. Rineka Cipta.
MLA (8th ed.) CitationPurba, Radiks. Angkutan Muatan Laut. Rineka Cipta.
Warning: These citations may not always be 100% accurate.