Gaya APA

Sundem, Garth. (2007). Improving student writing skills (Cet. 1). Amerika: Shell Education.

Gaya Chicago

Sundem, Garth. Improving student writing skills. Cet. 1 Amerika: Shell Education, 2007. Text.

Gaya MLA

Sundem, Garth. Improving student writing skills. Cet. 1 Amerika: Shell Education, 2007. Text.

Gaya Turabian

Sundem, Garth. Improving student writing skills. Cet. 1 Amerika: Shell Education, 2007. Print.