Gaya APA

Shepherd, Peter, Ishak, Zulkarnaen, Qadria, Laila. (2018). The Positive Approach: Manfaat Berpikir & Bersikap Positif . Yogyakarta: Bright Publisher.

Gaya Chicago

Shepherd, Peter, Ishak, Zulkarnaen, Qadria, Laila. The Positive Approach: Manfaat Berpikir & Bersikap Positif. Yogyakarta: Bright Publisher, 2018. Text.

Gaya MLA

Shepherd, Peter, Ishak, Zulkarnaen, Qadria, Laila. The Positive Approach: Manfaat Berpikir & Bersikap Positif. Yogyakarta: Bright Publisher, 2018. Text.

Gaya Turabian

Shepherd, Peter, Ishak, Zulkarnaen, Qadria, Laila. The Positive Approach: Manfaat Berpikir & Bersikap Positif. Yogyakarta: Bright Publisher, 2018. Print.