7 Sumber sekunder dapat menggantikan sumber 11 Perh primer jika

sumber11 Get the details of the current Voyage of TB.SUMBER 11 including Position, Port Calls, Destination, ETA and Distance travelled - IMO 0, MMSI 525700557, Call sn YDC4212. The current position of TB.SUMBER 11 is at Indonesia reported by AIS. The vessel TB.SUMBER 11 (MMSI 525700557) is a Tug and currently sailing under the flag of Indonesia.

sumber11, Gambar 1. Diagram konseptual penelitian Sumber: [11] Gambar 1 merupakan diagram konseptual penelitian dengan judul Pengembangan Program Studi Berkelanjutan.