Tác giả: VLOS (Vietnamese Library of Science)
Nguồn tin: http://tusach.thuvienkhoahoc.com/wiki/%C4%90%E1%BB%8Bnh_h%C6%B0%E1%BB%9Bng_chu%E1%BA%A9n_%C4%91%E1%BA%A7u_ra_v%E1%BB%81_ph%E1%BA%A9m_ch%E1%BA%A5t_v%C3%A0_n%C4%83ng_l%E1%BB%B1c_c%E1%BB%A7a_ch%C6%B0%C6%A1ng_tr%C3%ACnh_gi%C3%A1o_d%E1%BB%A5c_c%E1%BA%A5p_THPT