Gaya APA

Shepherd, Peter, Zulkarnaen Ishak, Laila Qadria. (2019). The Positive Approach : Manfaat Berpikir & Bersikap Positif (Cetakan III). Yogyakarta: Bright Publisher.

Gaya Chicago

Shepherd, Peter, Zulkarnaen Ishak, Laila Qadria. The Positive Approach : Manfaat Berpikir & Bersikap Positif. Cetakan III Yogyakarta: Bright Publisher, 2019. Text.

Gaya MLA

Shepherd, Peter, Zulkarnaen Ishak, Laila Qadria. The Positive Approach : Manfaat Berpikir & Bersikap Positif. Cetakan III Yogyakarta: Bright Publisher, 2019. Text.

Gaya Turabian

Shepherd, Peter, Zulkarnaen Ishak, Laila Qadria. The Positive Approach : Manfaat Berpikir & Bersikap Positif. Cetakan III Yogyakarta: Bright Publisher, 2019. Print.