APA (7e ed.) Bronvermelding

Volkman, T. A., & Caldwell, I. (1990). Sulawesi: The Celebes. Periplus Editions.

Chicago (17e ed.) Bronvermelding

Volkman, Toby Alice, en Ian Caldwell. Sulawesi: The Celebes. Sinagpore: Periplus Editions, 1990.

MLA (9e ed.) Bronvermelding

Volkman, Toby Alice, en Ian Caldwell. Sulawesi: The Celebes. Periplus Editions, 1990.