Gaya APA
Widiastuti, A., Nurhayati, A, S. (2024).
Mantra Soal Hots: OSN olimpiade sains nasional IPS SMP/MTs .
Jakarta:
Grameda Edukasi.
Gaya MLA
Widiastuti, Anik., Nurhayati, Annisa, Siti.
"Mantra Soal Hots: OSN olimpiade sains nasional IPS SMP/MTs".
Jakarta:
Grameda Edukasi,
2024.
Text.