International Law Book Services. (2008). Contoh soalan-soalan ramalan dan jawapan untuk rujukan peperiksaan Penilaian Tahap Kecekapan (PTK). International Law Book Services.
Chicago Style (17th ed.) CitationInternational Law Book Services. Contoh Soalan-soalan Ramalan Dan Jawapan Untuk Rujukan Peperiksaan Penilaian Tahap Kecekapan (PTK). Petaling Jaya, Selangor: International Law Book Services, 2008.
MLA (9th ed.) CitationInternational Law Book Services. Contoh Soalan-soalan Ramalan Dan Jawapan Untuk Rujukan Peperiksaan Penilaian Tahap Kecekapan (PTK). International Law Book Services, 2008.
Warning: These citations may not always be 100% accurate.