Gaya APA

Schuller, H. Robert. (). Tough times never last, but tough people do! . : .

Gaya Chicago

Schuller, H. Robert. Tough times never last, but tough people do!. : , . Text.

Gaya MLA

Schuller, H. Robert. Tough times never last, but tough people do!. : , . Text.

Gaya Turabian

Schuller, H. Robert. Tough times never last, but tough people do!. : , . Print.