Cita APA (7th ed.)

HOWARD , J. (1997). I CAN READ ABOUT FOSSILS. TROLL ASSOCIATES.

Cita Chicago (17th ed.)

HOWARD , JOHN. I CAN READ ABOUT FOSSILS. USA: TROLL ASSOCIATES, 1997.

Cita MLA (9th ed.)

HOWARD , JOHN. I CAN READ ABOUT FOSSILS. TROLL ASSOCIATES, 1997.