Kompetensi profesional guru SMK bidang keahlian teknik bangunan di Medan
Artikel Jurnal
Heap D.A., Brian
Vocational degree course offers 1987: students guide to careers and courses /by Brian Heap D.A.
Careers Consultants, 1986
Buku Teks
Suparno
Marketing profesional : straategi dan trik dalam menjual produk
Restu Agung, 2004
Buku Teks
Sinaga, Martha
Habit Profesional
Gramedia, 2006
Buku Teks
Mackie, Margaret
What is Right? : case studies in the ethics of education
Angus and Robertson, 1970
Buku Teks