APA (7th ed.) Citation

McKillop, R. F., & Sewell, L. (1975). Basic extension skills. Dept. of Primary Industry.

Chicago Style (17th ed.) Citation

McKillop, Robert F., and Laurie Sewell. Basic Extension Skills. Port Moresby: Dept. of Primary Industry, 1975.

MLA (9th ed.) Citation

McKillop, Robert F., and Laurie Sewell. Basic Extension Skills. Dept. of Primary Industry, 1975.