Gaya APA

Shepherd, Peter. (2019). The Positive Approach (Cet. 3). Yogyakarta: Bright Publiher.

Gaya Chicago

Shepherd, Peter. The Positive Approach. Cet. 3 Yogyakarta: Bright Publiher, 2019. Text.

Gaya MLA

Shepherd, Peter. The Positive Approach. Cet. 3 Yogyakarta: Bright Publiher, 2019. Text.

Gaya Turabian

Shepherd, Peter. The Positive Approach. Cet. 3 Yogyakarta: Bright Publiher, 2019. Print.