Gaya APA

ROCHE, M. (2019). E-Book Business English Speaking: Advanced Masterclass – Speak Advanced ESL Business English with Confidence & Elegance . : IDM Business English Books.

Gaya MLA

ROCHE, MARC. "E-Book Business English Speaking: Advanced Masterclass – Speak Advanced ESL Business English with Confidence & Elegance". : IDM Business English Books, 2019. Text.