APA (7e ed.) Bronvermelding

RYAN, J. (1960). Learning to swim is fun. The Ronald Press.

Chicago (17e ed.) Bronvermelding

RYAN, Jack. Learning to Swim Is Fun. New York: The Ronald Press, 1960.

MLA (9e ed.) Bronvermelding

RYAN, Jack. Learning to Swim Is Fun. The Ronald Press, 1960.