Gaya APA

Hadfield, S., HASSON, G. (2019). How To Assertive In Any Situation .Cara Bersikap Tegas Dalam Segala Situasi . (Ed.1). Jakarta: Bhuana Ilmu Populer.

Gaya MLA

Hadfield, Sue., HASSON, GILL. "How To Assertive In Any Situation .Cara Bersikap Tegas Dalam Segala Situasi .". Ed.1 Jakarta: Bhuana Ilmu Populer, 2019. Book.