Strategi Proses Perencanaan, Pelaksanaan, dan Pengendalian Pengadaan Jasa Konsultansi di PT X dengan Pendekatan Project Management Body of Knowledge (PMBOK) Edisi ke-6 Berbasis Risiko untuk Menghindari Seleksi Ulang = Strategy for the Planning, Conduct and Control of Consultancy Services Procurement at PT X Using a Risk-Based Project Management Body of Knowledge (PMBOK) 6th Edition Approach to Avoid Re-Selection