APA (7th ed.) Citation

Hammial, P., & Walwicz, A. (1989). Travel/writing: Phillip Hammial and Ania Walwicz. Sirius.

Chicago Style (17th ed.) Citation

Hammial, Phillip, and Ania Walwicz. Travel/writing: Phillip Hammial and Ania Walwicz. Australia: Sirius, 1989.

MLA (9th ed.) Citation

Hammial, Phillip, and Ania Walwicz. Travel/writing: Phillip Hammial and Ania Walwicz. Sirius, 1989.