Gaya APA

HONG, A, L, J. (). POWER CLOSING & HANDLING OBJECTION . Yogyakarta: PT. Mataram Bhumi Perkasa.

Gaya MLA

HONG, A, LA, JIAN. "POWER CLOSING & HANDLING OBJECTION". Yogyakarta: PT. Mataram Bhumi Perkasa, . TextBook.