Cita APA (7th ed.)

Ross, J. A., & Maynes, F. (1981). Geographic thinking skills. Ontario Institute for Studies in Education.

Cita Chicago (17th ed.)

Ross, John A., i Florence Maynes. Geographic Thinking Skills. Toronto, Ont.: Ontario Institute for Studies in Education, 1981.

Cita MLA (8th ed.)

Ross, John A., i Florence Maynes. Geographic Thinking Skills. Ontario Institute for Studies in Education, 1981.